document.onmouseover = function ( e ) {   
if ( !e ) e = window.event;   
var el = e.target ? e.target : e.srcElement;   
while ( el != null && el.tagName != "A" ) el = el.parentNode;   
if ( el == null ) return;   
if ( e.preventDefault ) e.preventDefault();   
else e.returnValue = true;};

document.onmousedown = function ( omd ) {   
if ( !omd ) omd = window.event;   
var el = omd.target ? omd.target : omd.srcElement;   
while ( el != null && el.tagName != "A" ) el = el.parentNode;   
if ( el == null ) return;   
if ( omd.preventDefault ) omd.preventDefault();   
else omd.returnValue = true;};

var mouseovercolour='#F1FFC0';
var keycursorbg='#546C00';//selected area in pencil marks (not the whole td)
var selected_colour='#D0FF31';
var lighter_selected_colour='#F7FFDC';
var pause_colour='#DAFF59';
var bg_shaded_colour='#B1E6FF';var gamerunning=false;
var d;
var nu;
var el;
var old;
var k=0;
var lo=0;
var m=0;
var X=0;
var Y=0;
var xt=0;
var yt=0;
var tn=81;
var oh='';
var os='';
var g=[];
var n=[];
var c=[];
var a=[];
var ohtml=[];
for (var i=0;i<9;i++) {c[i]=[]}
var gl=[];
var ed=[];

var mb=[]; 
var sb=[]; 
var tb=[];

var O='&nbsp;';
var st=false;
var mode='';
var selnote=0;
var secs;
var mins;
var hours;
var offset;
var rtmp=true;
var unpressed=true;
var complete=false;
var flagreset = false;
var laste;

//new vars
var gamepaused=false;
var pausedtime;
var bg_shaded=[];
var saved_sudoku = false;
var gamefrozen=false;
var gamesolution=false;
var pm=0;
var colon_old;
var colon;

onerror = ec;
function ec(e,u,l) { 
	//alert(e+';'+u+';'+l);
	return false; }

function docRef(element) {
	if (element) {
		if (document.getElementById) {
			if (document.getElementById(element)) {
				var ref = document.getElementById(element).style;
			}
		} else if (document.all) {
			if (document.all[element]) {
				var ref = document.all[element].style;
			}
		} else if (document.layers) {
			if (document.layers[element]) {
				var ref = document.layers[element];
			}
		} else {  }
		return ref
	} else {return null;}
}

function htmlRef(element) {
	if (element) {
		if (document.getElementById) {
			if (document.getElementById(element)) {
				var ref = document.getElementById(element);
			}
		} else if (document.all) {
			if (document.all[element]) {
				var ref = document.all[element];
			}
		} else if (document.layers) {
			if (document.layers[element]) {
				var ref = document.layers[element];
			}
		} else {  }
		return ref 
	} else {return null;}
}

function gb(s) {
	a=s.split('');
	var k=0;
	var la=[0,9,18,3,12,21,6,15,24,27,36,45,30,39,48,33,42,51,54,63,72,57,66,75,60,69,78]
	for (var i=0;i<27;i++) {
		for (var j=0;j<3;j++) {
			g[la[i]+j]=a[k++];
		}
	}
}


function eh(t,d) {

	if (st && !gamepaused) { 
		if(t<4) {
			if (mb.length==0 || mb[mb.length-1]!=[t,d]) {
				if (t==2) { 
					//sb[sb.length]=[t,d];
					if ( sb[1] )
					{
						sb[0]=sb[1];
						sb[1]=[t,d];
						sp=1;
					}
					else if ( sb[0] )
					{
						sb[1]=[t,d];
						sp=1;
					}
					else
					{
						sb[0]=[t,d];
						sp=0;
					}
					if (d.substr(0,2) != "gu") {
							if ((d.substr(0,1) == 'n')&&(d.charAt(1) >= '0')&&(d.charAt(1) <= '5')) {
								mode = 'no';//document.sudoku.operafix.focus();
							}
					}
					// mouseclick
					if ((sb[sp][1].substring(0,2)=='no')||(sb[sp][1].substring(0,2)=='gu')) {
						se(sb[sp][1])
					} else {
						se('no'+sb[sp][1].substring(2))
					}
				}
				else { 
					//mb[mb.length]=[t,d] 
					if ( mb[1] )
					{
						mb[0]=mb[1];
						mb[1]=[t,d];
						mp=1;
					}
					else if ( sb[0] )
					{
						mb[1]=[t,d];
						mp=1;
					}
					else
					{
						mb[0]=[t,d];
						mp=0;
					}
					//add if t==1
					if ( t==1 && os && os!=d )
					{
						//alert('mouse out - ' + d + ', os ' + os);
					}
					// mouse move
					if (mb[mp][0]==0) {
						if ((mb[mp][1].substring(0,2)=='no')||(mb[mp][1].substring(0,2)=='gu')) {
							he(mb[mp][1])
						} else {
							hidehighlight();
						}
					}
					else {
						hidehighlight();
					}
				} 
			} 
		} else { 
			// keyboard
			if ( tb[1] )
			{
				tb[0]=tb[1];
				tb[1]=[t,d];
				tp=1;
			}
			else if ( tb[0] )
			{
				tb[1]=[t,d];
				tp=1;
			}
			else
			{
				tb[0]=[t,d];
				tp=0;
			}
			var e=tb[tp][1];
			if ((e>48)&&(e<58)&&(mode!='')) { 
				var nmt=(e-48);
				num(nmt)} 
			else if ((e>96)&&(e<106)&&(mode!='')) { 
				var nmt=(e-96); 
				num(nmt)}
			else if (e==9) { tab() }
			else if (e==-9) { shifttab() }
			else if (e==37) { left() }
			else if (e==39) { right() }
			else if (e==38) { up() }
			else if (e==40) { down() }
			else if (e==8) { del(-1) }
			else if (e==46) { del(1) }
			else if (e==32) { del(0) }
			//tp = tb.length-1; 
		} 
	} 
}

function updateTime()
{
	if ( isNaN(el.getSeconds()) )
	{
		d = new Date(); 
		nu = new Date(); 
		el = new Date(nu.getTime()-d.getTime());
	}
	
	if (el.getSeconds()<10) {secs='0'+el.getSeconds()} else {secs=el.getSeconds()}
	if (el.getMinutes()<10) {mins='0'+el.getMinutes()} else {mins=el.getMinutes()}
	if (el.getHours()>0)
	{
		if (el.getHours()<10) {hours='0'+el.getHours()} else {hours=el.getHours()}
	}
	
	if (hours) {
		htmlRef('clock').innerHTML="<span>"+hours+"<span id=\"colon\" class=\"blink_1\">:</span>"+mins+"<"+"/span>";
	} else if (el.getMinutes()) {
		htmlRef('clock').innerHTML="<span>"+mins+"<span id=\"colon\" class=\"blink_1\">:</span>"+secs+"<"+"/span>";
	} else {
		//alert('hours ' + hours + ', mins ' + mins + ', secs ' + secs);
		htmlRef('clock').innerHTML="<span>00<span id=\"colon\" class=\"blink_1\">:</span>"+secs+"<"+"/span>";
	}
}

// new function
function pause()
{
	if ( !gamepaused )
	{
		gamepaused=true;
		nu = new Date(); 
		pausedtime=new Date(nu.getTime()-d.getTime());
		var i;
		htmlRef('colon').className='blink_1';
		docRef('grid').backgroundColor=pause_colour;
		for (i=0; i<81; i++)
		{
			docRef('bl'+i).backgroundColor=pause_colour;
			if ( htmlRef('fi'+i) )
			{
				htmlRef('fi'+i).innerHTML='';
			}
		}
		for (i=0; i<lo; i++)
		{
			if ( docRef('no'+i) ) { docRef('no'+i).backgroundColor=pause_colour; }
			if ( docRef('gu'+i) ) { docRef('gu'+i).backgroundColor=pause_colour; }
			if ( htmlRef('no'+i) )
			{
				htmlRef('no'+i).innerHTML='';
			}
			if ( htmlRef('gu'+i) )
			{
				htmlRef('gu'+i).innerHTML='';
			}
		}
		//MM_swapImage('pause','',"/images/button-play-small-highlight.gif",1);
		if ( htmlRef('play') )
		{
			htmlRef('play').innerHTML='<a href="javascript:pause();"><img name="play" id="pause" src="/images/button-play-small.gif" border="0" onmouseover="this.src=\'/images/button-play-small-highlight.gif\'" onmouseout="this.src=\'/images/button-play-small.gif\'" width="14" height="15" title="Play"></a>';
		}
		if ( htmlRef('print_span') )
		{
			htmlRef('print_span').innerHTML='<img name="print" src="/images/button-print-grey.gif" border="0" title="Cannot print">';
		}
		if ( htmlRef('save_span') )
		{
			htmlRef('save_span').innerHTML='<img name="save" src="/images/button-save-grey.gif" border="0" title="Cannot save">';
		}
	}
	else
	{
		for (i=0; i<81; i++)
		{
			docRef('bl'+i).backgroundColor='#FFFFFF';
			if ( docRef('no'+i) )
			{
				if ( bg_shaded[i] )
				{
					docRef('no'+i).backgroundColor=bg_shaded_colour;
				}
				else
				{
					docRef('no'+i).backgroundColor='#FFFFFF';
				}
			}
			if ( docRef('gu'+i) )
			{
				if ( bg_shaded[i] )
				{
					docRef('gu'+i).backgroundColor=bg_shaded_colour;
				}
				else
				{
					docRef('gu'+i).backgroundColor='#FFFFFF';
				}
			}
			if ( htmlRef('fi'+i) )
			{
				if ( g[i] )
				{
					htmlRef('fi'+i).innerHTML=g[i];
				}
				else
				{
					//alert(g[i] + ' not set');//fix!!!
				}
			}
			if ( htmlRef('no'+i) )
			{
				if ( ed[i]!='' )
				{
					htmlRef('no'+i).innerHTML=n0a+i+n0b+i+n0c+i+n0d+i+nse+O+eas+n1a+i+n1b+i+n1c+i+n1d+i+nse+O+eas+n2a+i+n2b+i+n2c+i+n2d+i+nse+O+eas+n3a+i+n3b+i+n3c+i+n3d+i+nse+O+eas+n4a+i+n4b+i+n4c+i+n4d+i+nse+O+eas+n5a+i+n5b+i+n5c+i+n5d+i+nse+O+eas;
				}
				else
				{
					htmlRef('no'+i).innerHTML=n0a+i+n0b+i+n0c+i+n0d+i+nse+n[i][0]+eas+n1a+i+n1b+i+n1c+i+n1d+i+nse+n[i][1]+eas+n2a+i+n2b+i+n2c+i+n2d+i+nse+n[i][2]+eas+n3a+i+n3b+i+n3c+i+n3d+i+nse+n[i][3]+eas+n4a+i+n4b+i+n4c+i+n4d+i+nse+n[i][4]+eas+n5a+i+n5b+i+n5c+i+n5d+i+nse+n[i][5]+eas;
				}
			}
			if ( htmlRef('gu'+i) )
			{
				if ( ed[i]!='' )
				{
					htmlRef('gu'+i).innerHTML='<span class="guess">' + ed[i] + '</span>';
				}
				else
				{
					htmlRef('gu'+i).innerHTML='';
				}
			}
		}
		//MM_swapImage('pause','',"/images/button-pause-small-highlight.gif",1);
		if ( htmlRef('play') )
		{
			htmlRef('play').innerHTML='<a href="javascript:pause();"><img name="pause" id="pause" src="/images/button-pause-small.gif" border="0" onmouseover="this.src=\'/images/button-pause-small-highlight.gif\'" onmouseout="this.src=\'/images/button-pause-small.gif\'" width="14" height="15" title="Pause"></a>';
		}
		if ( htmlRef('print_span') )
		{
			htmlRef('print_span').innerHTML='<a href="javascript:create_print_display();"><img name="print" src="/images/button-print.gif" border="0" onmouseover="this.src=\'/images/button-print-highlight.gif\'" onmouseout="this.src=\'/images/button-print.gif\'" title="Print"></a>';
		}
		if ( htmlRef('save_span') )
		{
			htmlRef('save_span').innerHTML='<a href="javascript:save();"><img name="save" src="/images/button-save.gif" border="0" onmouseover="this.src=\'/images/button-save-highlight.gif\'" onmouseout="this.src=\'/images/button-save.gif\'" title="Save"></a>';
		}
		gamepaused=false;
		nu = new Date(); 
		d = new Date(nu.getTime()-pausedtime.getTime());
		pb(mb.length-1,tb.length-1,sb.length-1);
	}
}

// new function
function clear_grid(flash_text)
{
	nu = new Date(); 
	pausedtime=new Date(nu.getTime()-d.getTime());
	gamepaused=true;
	var i;
	htmlRef('colon').className='blink_1';
	for (i=0; i<81; i++)
	{
		if ( htmlRef('fi'+i) )
		{
			htmlRef('fi'+i).innerHTML='';
		}
		if ( htmlRef('no'+i) )
		{
			htmlRef('no'+i).innerHTML='';
		}
		if ( htmlRef('gu'+i) )
		{
			htmlRef('gu'+i).innerHTML='';
		}
		
		if ( bg_shaded[i]==1 )
		{
			//alert('i ' + i);
			docRef('no'+i).backgroundColor='#FFFFFF';
			docRef('gu'+i).backgroundColor='#FFFFFF';
		}
	}
	if ( os )
	{
		i=os.substring(2);
		if ( docRef('no'+i) ) { docRef('no'+i).backgroundColor='#FFFFFF'; }
		if ( docRef('gu'+i) ) { docRef('gu'+i).backgroundColor='#FFFFFF'; }
	}
	if ( flash_text )
	{
		docRef('flash').top='317px';
		htmlRef('flash').innerHTML='<span>' + flash_text + '</span>';
	}
}

function pb(mp,tp,sp) {
	if ( !gamepaused )
	{
		//timer tick handling
		nu = new Date(); 
		if (el) { old = el.getSeconds();colon_old = Math.floor(el.getMilliseconds()/500); }
		else { colon_old = 0; }
		el = new Date(nu.getTime()-d.getTime()); 
		var sec = el.getSeconds(); 
		colon = Math.floor(el.getMilliseconds()/500);
		if (old!=sec) { updateTime();  }
		if (colon_old!=colon)
		{ 
			if ( colon==0 )
			{
				htmlRef('colon').className='blink_1';
			}
			else
			{
				htmlRef('colon').className='blink_2';
			}
		}
		if (isNaN(mp)) mp=0;
		
		setTimeout("pb("+mp+","+tp+","+sp+")",50);
	}
}

// new function
function get_selection()
{
	var text = '';
	if (window.getSelection)
	{
		text = window.getSelection();
	}
	else if (document.getSelection)
	{
		text = document.getSelection();
	}
	else if (document.selection)
	{
		text = document.selection.createRange().text;
	}
	else return false;
	
	return text;
}

	
function del(d) {
	var l=os.substring(2)-0;// && d!=0
	if (mode=='no') {
		var i=0;
		//var selected_text=get_selection();
		var selected_text=false;
		if ( selected_text )
		{
			var j;
			var moving_numbers;
			var selected_array=selected_text.split('');
			for (j in selected_array)
			{
				moving_numbers=false;
				for (i=0;i<=5;i++)
				{
					//if ( n[l][i]!=O && selected_text.indexOf(n[l][i])!=-1 )
					if ( n[l][i]==selected_array[j] )
					{
						selnote=i;
						if ( n[l][i]!=O ) { pm--; }
						moving_numbers=true;
					}
					
					if ( moving_numbers )
					{
						if ( n[l][i+1] )
						{
							n[l][i]=n[l][i+1];
						}
						else
						{
							n[l][i]=O;
						}
					}
				}
			}
			document.sudoku.operafix.focus();
		}
		else
		{
			if ((d==-1)&&(selnote>0)) {selnote--}
			if ( n[l][selnote]!=O ) { pm--; }//alert('Deleting a pencil mark');
			while (((selnote+i)<6)&&(selnote>-1)) {
				if (n[l][selnote+(i+1)]) {
					n[l][selnote+(i++)]=n[l][selnote+i];
				} else {
					n[l][selnote+i]=O;
					i++;
				}
			}
		}
		htmlRef(os).innerHTML=n0a+l+n0b+l+n0c+l+n0d+l+nse+n[l][0]+eas+n1a+l+n1b+l+n1c+l+n1d+l+nse+n[l][1]+eas+n2a+l+n2b+l+n2c+l+n2d+l+nse+n[l][2]+eas+n3a+l+n3b+l+n3c+l+n3d+l+nse+n[l][3]+eas+n4a+l+n4b+l+n4c+l+n4d+l+nse+n[l][4]+eas+n5a+l+n5b+l+n5c+l+n5d+l+nse+n[l][5]+eas;
		notesel(selnote);
		if ( pm==0 && m==0 )
		{
			if ( htmlRef('save_span') )
			{
				htmlRef('save_span').innerHTML='<img name="save" src="/images/button-save-grey.gif" border="0" title="Cannot save">';
			}
		}
	}
	else if (mode=='gu') {
		if (ed[l]!='') {--m;ed[l]='';}
		if ( lo==m+1)
		{
			complete=false;
			if ( htmlRef('submit_span') )
			{
				htmlRef('submit_span').innerHTML='<img name="submit1" src="/images/button-submit-grey.gif" border="0" title="Cannot submit solution">';
			}
			else if ( htmlRef('check_span') )
			{
				htmlRef('check_span').innerHTML='<img name="check" id="check" src="/images/button-check-grey.gif" border="0" title="Cannot check solution">';
			}
		}
 		htmlRef('no'+l).innerHTML=n0a+l+n0b+l+n0c+l+n0d+l+nse+n[l][0]+eas+n1a+l+n1b+l+n1c+l+n1d+l+nse+n[l][1]+eas+n2a+l+n2b+l+n2c+l+n2d+l+nse+n[l][2]+eas+n3a+l+n3b+l+n3c+l+n3d+l+nse+n[l][3]+eas+n4a+l+n4b+l+n4c+l+n4d+l+nse+n[l][4]+eas+n5a+l+n5b+l+n5c+l+n5d+l+nse+n[l][5]+eas;
		if (docRef('no'+l)!=null) {docRef('no'+l).color=keycursorbg} else {alert('docref: no'+l+' is null');}//removed docRef('no'+l).backgroundColor='FFE1AE';
		htmlRef(os).innerHTML='';
		if (d == -1) shifttab();
		if (d == 1) tab();
		if ( pm==0 && m==0 )
		{
			if ( htmlRef('save_span') )
			{
				htmlRef('save_span').innerHTML='<img name="save" src="/images/button-save-grey.gif" border="0" title="Cannot save">';
			}
		}
	}
}
	
function left() {
	var l = os.substring(2)-0;
	if (mode=='no') { 
		if (selnote) {
			notedsel(selnote);
			selnote--;
			notesel(selnote)}
		else {
			var tmpx=gl[l][0];
			var tmpy=gl[l][1];
			if (tmpx>0) {
				var otmpx=tmpx;tmpx--;selnote=0;
				while (c[tmpx][tmpy]=='.') {
					if (tmpx<1) {
						rtmp=false;tmpx=otmpx;break}
					tmpx--} 
				if (tmpx!=otmpx) {
					notedsel(selnote);
					while ((n[l-1][selnote]!=O)&&(selnote<5)) {selnote++}
				}
			eh(2,mode+c[tmpx][tmpy]) }
		}
	}
	else {
		var tmpx=gl[l][0];
		var tmpy=gl[l][1];
		if (tmpx>0)
		{
			var otmpx=tmpx;tmpx--;
			while (c[tmpx][tmpy]=='.') {if (tmpx<1) {tmpx=otmpx;break}tmpx--}    if (c[tmpx][tmpy]+1) {eh(2,mode+c[tmpx][tmpy])}
		}
	}
}

function right() {
	var l = os.substring(2)-0;		
	if (mode=='no') { 
			if ((n[l][selnote]!=O)&&(selnote<5)) {
				notedsel(selnote);
				selnote++;
				notesel(selnote)}
			else {
				var tmpx=gl[l][0];
				var tmpy=gl[l][1];
				if (tmpx<8) {
					var otmpx=tmpx;tmpx++;
					while (c[tmpx][tmpy]=='.') {
						if (tmpx>7) {tmpx=otmpx;break}tmpx++} 
				if (tmpx!=otmpx) {
					notedsel(selnote);
					selnote=0}
					rtmp=false;
				eh(2,mode+c[tmpx][tmpy]) } } }
		else {
			var tmpx=gl[l][0];
			var tmpy=gl[l][1];
			if (tmpx<8) {var otmpx=tmpx;tmpx++;
			while (c[tmpx][tmpy]=='.') {
				if (tmpx>7) {tmpx=otmpx;break}
				tmpx++
			}  
			if (c[tmpx][tmpy]+1) {eh(2,mode+c[tmpx][tmpy])} 
		}
	}
}

function up() {
		var l = os.substring(2)-0;
		var tmpx=gl[l][0];
		var tmpy=gl[l][1];
		if(mode=='gu') {while ((n[l][selnote]!=O)&&(selnote<5)) {selnote++} eh(2,'no'+(l))} else {
		while (c[tmpx][tmpy-1]=='.') {tmpy--} if (c[tmpx][tmpy-1]+1) {eh(2,'gu'+c[tmpx][tmpy-1])}}
}

function down() {
		var l = os.substring(2)-0;
		var tmpx=gl[l][0];
		var tmpy=gl[l][1];
		if(mode=='no') {eh(2,'gu'+(l))} else { 
		while ((n[l][selnote]!=O)&&(selnote<5)) {selnote++} while (c[tmpx][tmpy+1]=='.') {tmpy++} if (c[tmpx][tmpy+1]+1) {eh(2,'no'+c[tmpx][tmpy+1])}}
}
	
function tab() {
		var l = os.substring(2)-0;
		notedsel(selnote);
		if (l<(ed.length-1)) eh(2,mode+((l)+1));
}

function shifttab() {
		var l = os.substring(2)-0;
		notedsel(selnote);
		if (l > 0) eh(2,mode+((l)-1));
}
	
function num(nmt) {
	var l=os.substring(2)-0;
	if (mode=='no') {
		if ((nmt!=n[l][0])&&(nmt!=n[l][1])&&(nmt!=n[l][2])&&(nmt!=n[l][3])&&(nmt!=n[l][4])&&(nmt!=n[l][5])) {
			if ( n[l][selnote]==O ) { pm++; }
			n[l][selnote]=nmt;
			htmlRef(os).innerHTML=n0a+l+n0b+l+n0c+l+n0d+l+nse+n[l][0]+eas+n1a+l+n1b+l+n1c+l+n1d+l+nse+n[l][1]+eas+n2a+l+n2b+l+n2c+l+n2d+l+nse+n[l][2]+eas+n3a+l+n3b+l+n3c+l+n3d+l+nse+n[l][3]+eas+n4a+l+n4b+l+n4c+l+n4d+l+nse+n[l][4]+eas+n5a+l+n5b+l+n5c+l+n5d+l+nse+n[l][5]+eas;
			selnote++;
			if (selnote>5) {selnote=5}
			notesel(selnote);
			if ( pm==1 && m==0 )
			{
				if ( htmlRef('save_span') )
				{
					htmlRef('save_span').innerHTML='<a href="javascript:save();"><img name="save" src="/images/button-save.gif" border="0" onmouseover="this.src=\'/images/button-save-highlight.gif\'" onmouseout="this.src=\'/images/button-save.gif\'" title="Save"></a>';
				}
			}
		}
	} else if (mode=='gu') {
		//alert('calling num gu: ' + l);
		htmlRef('no'+l).innerHTML=n0a+l+n0b+l+n0c+l+n0d+l+nse+O+eas+n1a+l+n1b+l+n1c+l+n1d+l+nse+O+eas+n2a+l+n2b+l+n2c+l+n2d+l+nse+O+eas+n3a+l+n3b+l+n3c+l+n3d+l+nse+O+eas+n4a+l+n4b+l+n4c+l+n4d+l+nse+O+eas+n5a+l+n5b+l+n5c+l+n5d+l+nse+O+eas;
		if (ed[l]=='') {++m; ed[l]=nmt;}
		else {ed[l]=nmt;}
		htmlRef(os).innerHTML='<span class="guess">'+nmt+'<'+'/span>';
		tab();
		if ( pm==0 && m==1 )
		{
			if ( htmlRef('save_span') )
			{
				htmlRef('save_span').innerHTML='<a href="javascript:save();"><img name="save" src="/images/button-save.gif" border="0" onmouseover="this.src=\'/images/button-save-highlight.gif\'" onmouseout="this.src=\'/images/button-save.gif\'" title="Save"></a>';
			}
		}
	}
	if (m==lo) {complete=true; playMOver();}
}

function notesel(n) {
// displays pencil marks in current cell
	if (os) {
		var l = os.substring(2)-0;
		if (docRef('n'+n+l)!=null) {
			docRef('n'+n+l).color=mouseovercolour;
			docRef('n'+n+l).backgroundColor=keycursorbg
		}
	}
}
	
function notedsel(n) {
// move focus to pencil marks in new cell
	if (os) {
		var l = os.substring(2)-0;
		if (docRef('n'+n+l)!=null) {
			docRef('n'+n+l).color=keycursorbg;
			docRef('n'+n+l).backgroundColor='';
			document.sudoku.operafix.focus();
		}
	}
}
	
function se(e) {
	if (os) {
		var l = os.substring(2)-0;
		if (docRef('no'+l)!=null)
		{
			if ( bg_shaded[l] )
			{
				docRef('no'+l).backgroundColor=bg_shaded_colour;
			}
			else
			{
				docRef('no'+l).backgroundColor='#ffffff';
			}
		}
		if (docRef('gu'+l)!=null)
		{
			if ( bg_shaded[l] )
			{
				docRef('gu'+l).backgroundColor=bg_shaded_colour;
			}
			else
			{
				docRef('gu'+l).backgroundColor='#ffffff';
			}
		}
		if (docRef(os)!=null) {docRef(os).color=keycursorbg} 
	}
	if (e.substring(0,2)=='gu') {
		notedsel(selnote);
		mode='gu';
		if (docRef(e)!=null) {docRef(e).backgroundColor=selected_colour; docRef(e).color=keycursorbg; laste = e;}
		var l = (e.substring(2)-0);
		if (docRef('no'+l)!=null) {
			docRef('no'+l).backgroundColor=selected_colour;
			//docRef('no'+l).color=selected_colour;
			docRef('no'+l).color=keycursorbg;
		}
		os = e
	} else if (e.substring(0,2)=='no') {
		var l = (e.substring(2)-0);
		if ( ed[l]!='' )
		{
			htmlRef('no'+l).innerHTML=n0a+l+n0b+l+n0c+l+n0d+l+nse+n[l][0]+eas+n1a+l+n1b+l+n1c+l+n1d+l+nse+n[l][1]+eas+n2a+l+n2b+l+n2c+l+n2d+l+nse+n[l][2]+eas+n3a+l+n3b+l+n3c+l+n3d+l+nse+n[l][3]+eas+n4a+l+n4b+l+n4c+l+n4d+l+nse+n[l][4]+eas+n5a+l+n5b+l+n5c+l+n5d+l+nse+n[l][5]+eas;
		}
		notedsel(selnote);
		mode='no';
		if (docRef(e)!=null) {docRef(e).backgroundColor=selected_colour; docRef(e).color=keycursorbg}
		if (docRef('gu'+l)!=null) {docRef('gu'+l).backgroundColor=mouseovercolour}
		if (docRef('no'+l)!=null) {docRef('no'+l).color=keycursorbg}
		os = e;
		if (rtmp) { 
			while ((n[os.substring(2)-0][selnote]==O)&&(selnote>0)) {selnote--} 
			while ((n[os.substring(2)-0][selnote]!=O)&&(selnote<5)) {selnote++} 
		} else { 
			rtmp=true 
		}
		notesel(selnote);
	} 
}

function hidehighlight() {
	if (oh == '') return;
	var l = oh.substring(2);
	var sb_element = new String(sb[sb.length-1]);
	if ( sb_element.substring(4)!=oh.substring(2) )
	{
		if (docRef('no'+l)!=null) blank(l);
		if (docRef(oh)!=null) {docRef(oh).color=keycursorbg}
		oh = '';
	}
}
	
function he(e) {
	if (e) {
		var l = oh.substring(2);
		if (os.substring(2)!=l) {
			if (docRef('no'+l)!=null) blank(l);
			if (docRef(oh)!=null) {docRef(oh).color=keycursorbg}
		}
		if (os.substring(2)!=e.substring(2)) {
			 if (e.substring(0,2)=='no') {
				//alert('moving into pencil mark area');
				if (docRef(e)!=null) {docRef(e).backgroundColor=mouseovercolour;docRef(e).color=keycursorbg;}
				if (docRef('no'+e.substring(2))!=null) {docRef('no'+e.substring(2)).backgroundColor=mouseovercolour}
				if (docRef('gu'+e.substring(2))!=null) {docRef('gu'+e.substring(2)).backgroundColor=lighter_selected_colour}
				//docRef('no'+e.substring(2)).cursor = 'default';
			} else if (e.substring(0,2)=='gu') {
				if (docRef(e)!=null) {docRef(e).backgroundColor=mouseovercolour;docRef(e).color=keycursorbg}
				if (docRef('no'+e.substring(2))!=null) {docRef('no'+e.substring(2)).backgroundColor=mouseovercolour}
			}
			oh = e; 
		} 
	} 
}

function blank(l) {
	 if ( bg_shaded[l] )
	 {
	 	docRef('no'+l).backgroundColor=bg_shaded_colour;
		docRef('gu'+l).backgroundColor=bg_shaded_colour;
	 }
	 else if ( !gamepaused )
	 {
		docRef('no'+l).backgroundColor='#ffffff';
		docRef('gu'+l).backgroundColor='#ffffff';
	 }
}
	
var iskeydown=0;

function kl(e){
	if(!e) e = window.event;
	var res = e.keyCode;
	if(res==9) {
		if (e.shiftKey) res=-9;
	}
	if ((iskeydown == 1) && ((res > 48) && (res < 59))) return false;
	iskeydown = 1;
	eh(4,res); 
	return false 
}

function KeyUp(e){
	if(!e) e = window.event;
	iskeydown = 0;
	return false;
}

document.onkeydown = kl;
document.onkeyup = KeyUp;

function pl() {
	if ( saved_sudoku ) {// or gamefrozen
	
	}
	else if (flagreset != true) {
		d = new Date()
	} 		
	else {
		m==lo; complete=true; playMOver();
	}
	
	if ( !gamesolution )
	{
		gamerunning=true;flagreset = false;st=true; 
		pb(-1,-1,-1);
	}
}
		
function na(a,b,c,d) {}

//function updatetrack(data,dest) {
//	tmpobj=eval('document.sudoku.'+dest); tmpobj.value=data}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function ol() {
	MM_preloadImages('/images/button-back-highlight.gif','/images/button-check-highlight.gif','/images/button-help-highlight.gif','/images/button-pause-small-highlight.gif','/images/button-play-small-highlight.gif','/images/button-print-highlight.gif','/images/button-reset-highlight.gif','/images/button-restore-highlight.gif','/images/button-save-highlight.gif','/images/button-solution-highlight.gif','/images/button-submit-highlight.gif','/images/button-play-small.gif','/images/button-restore.gif','/images/button-solution.gif','/images/button-submit.gif','/images/button-play-small-grey.gif','/images/button-print-grey.gif','/images/button-restore-grey.gif');
	//docRef('refref').visibility='hidden';
}

// new function
function buttonMOut(button) {
	if ( button=='pause' )
	{
		if ( gamepaused ) {
			MM_swapImage('pause','','/images/button-play-small.gif',1);
		} else {
			MM_swapImage('pause','','/images/button-pause-small.gif',1);
		}
	}
}

function playMOver() {
	if (unpressed) {
		//MM_swapImage('submit2','','images/main/button-play-small-highlight.gif',1); 
		if(docRef('submit2')!=null) docRef('submit2').cursor = 'default';
	} else if (complete) {
		//MM_swapImage('submit2','','images/main/button-submit-highlight.gif',1); 
		if(docRef('submit2')!=null) docRef('submit2').cursor = 'pointer';
		if ( htmlRef('submit_span') )
		{
			htmlRef('submit_span').innerHTML='<a href="javascript:check_answer(\'submit\');" onClick="clear_grid()"><img name="submit1" src="/images/button-submit.gif" border="0" onmouseover="this.src=\'/images/button-submit-highlight.gif\'" onmouseout="this.src=\'/images/button-submit.gif\'" title="Submit solution"></a>';
			display_submit_message();
		}
		else if ( htmlRef('check_span') )
		{
			htmlRef('check_span').innerHTML='<a href="javascript:check_answer(\'check\');" onClick="clear_grid()"><img name="check" id="check" src="/images/button-check.gif" border="0" onmouseover="this.src=\'/images/button-check-highlight.gif\'" onmouseout="this.src=\'/images/button-check.gif\'" title="Check solution"></a>';
			display_check_message();
		}
	}
}

// new function
function buttonMOver(button) {
	if ( button=='pause' )
	{
		if ( gamepaused ) {
			MM_swapImage('pause','','/images/button-play-small-highlight.gif',1); 
		} else {
			MM_swapImage('pause','','/images/button-pause-small-highlight.gif',1); 
		}
	}
}

function playMDown() {
	if (unpressed) {
		pl();
		//MM_swapImage('submit2','','images/main/button-submit-grey.gif',1);
		unpressed=false;
		document.sudoku.operafix.focus();
		//return false;
	} else if (complete) {
		//htmlRef('d2').value=d.getTime();
		gamerunning=false;
		//htmlRef('sudoku').submit();
	}
}


// new function
function create_cookie_string()
{
	var cookie_string =  + "," + '' + ",";
	//alert('cookie_string: ' + cookie_string);
	var cookie_string_2 = '';
	var i;
	var j;
	for (i=0; i<lo; i++)
	{
		if ( ed[i]=='' )
		{
			cookie_string = cookie_string + ".";
		}
		else
		{
			cookie_string = cookie_string + String(ed[i]);
		}
		
		for (j=0; j<6; j++)
		{
			if ( n[i][j]!=O )
			{
				cookie_string_2 = cookie_string_2 + n[i][j];
			}
		}
		cookie_string_2 = cookie_string_2 + ",";
	}
	nu = new Date(); 
	if ( !gamepaused )
	{
		pausedtime=new Date(nu.getTime()-d.getTime());
	}
	var pausedtime_seconds;
	pausedtime_seconds=pausedtime.getTime()/1000;
	cookie_string=cookie_string+','+cookie_string_2+','+pausedtime+','+pausedtime_seconds;
	
	return cookie_string;
}

//new function
function save()
{
	var expire_date = new Date();
	expire_date.setMonth(expire_date.getMonth()+1);
	cookie_string=create_cookie_string();
	if ( cookie_string.search(/\+/)!=-1 )
	{
		//alert('found + in ' + cookie_string);
		cookie_string=cookie_string.replace("+","%2B");
	}
	cookie_string=escape(cookie_string);
	document.cookie = "saved_sudoku="+cookie_string+";expires=" + expire_date.toGMTString() + ";path=/";
	docRef('flash').top='317px';
	htmlRef('flash').innerHTML='<span>Sudoku saved</span>';
	setTimeout("remove_flash()",1000);
	if ( htmlRef('restore_span') )
	{
		htmlRef('restore_span').innerHTML='<input name="restore" type="image" src="/images/button-restore.gif" border="0" onmouseover="this.src=\'/images/button-restore-highlight.gif\'" onmouseout="this.src=\'/images/button-restore.gif\'" onClick="clear_grid(\'Loading Sudoku...\')" title="Restore">';
	}
}

//new function, maybe rename?
function session_save(action)
{
	if ( !gamefrozen )//not solution
	{
		cookie_string=create_cookie_string();
		document.sudoku.saved_sudoku_string.value = cookie_string;
	}
	document.sudoku.action.value = action;
	document.sudoku.submit();
}

//new function
function remove_flash()
{
	docRef('flash').top='-30px';
	htmlRef('flash').innerHTML='';
}

//new function
function check_answer(action)
{
	var x_var;
	var y_var;
	var i;
	var j;
	var g_count=0;
	var ed_count=0;
	var sudoku_array=[];
	for (var i=1;i<=9;i++) {sudoku_array[i]=[]}
	var sudoku_string='';
	for (y_var=0; y_var<=6; y_var=y_var+3)
	{
		for (x_var=0; x_var<=6; x_var=x_var+3)
		{
			for (j=y_var+1; j<=y_var+3; j++)
			{
				for (i=x_var+1; i<=x_var+3; i++)
				{
					if ( g[g_count]=='.' )
					{
						sudoku_array[i][j]=String(ed[ed_count]);
						ed_count++;
					}
					else
					{
						sudoku_array[i][j]=String(g[g_count]);
					}
					g_count++;
				}
			}
		}
	}
	for (j=1; j<=9; j++)
	{
		for (i=1; i<=9; i++)
		{
			sudoku_string=sudoku_string + sudoku_array[i][j];
		}
	}
	document.sudoku.solved_sudoku_string.value = sudoku_string;
	document.sudoku.action.value = action;
	
	cookie_string=create_cookie_string();
	document.sudoku.saved_sudoku_string.value = cookie_string;
	document.sudoku.submit();
}

// new function
function reset_confirm()
{
	if ( m>3 || pm>19 )
	{
		if ( confirm('Are you sure that you want to reset the current puzzle?') )
		{
			clear_grid();
			return true;
		}
		else
		{
			return false;
		}
	}
	else
	{
		clear_grid();
		return true;
	}
}

// new function
function return_play()
{
	document.sudoku.action.value = 'play';
	document.sudoku.submit();
}

// new function
function create_print_display()
{
	if ( m==0 && pm==0 && !gamefrozen)
	{
		docRef('clock').display="none";
	}
	//document.htmlRef('sudoku_game').focus();
	//document.htmlRef('sudoku_game').print();
	//frames["IframeName"].focus();original
	//frames["IframeName"].print();
	window.print();
	if ( m==0 && pm==0 && !gamefrozen )
	{
		setTimeout("remove_print_display()",1000);
	}
}

// new function
function remove_print_display()
{
	docRef('clock').display="block";
}

// new function
function display_check_message()
{
	docRef('flash').top='317px';
	htmlRef('flash').innerHTML='<span>Press Check</span>';
	setTimeout("remove_flash()",1000);
}

// new function
function display_submit_message()
{
	docRef('flash').top='317px';
	htmlRef('flash').innerHTML='<span>Press Submit</span>';
	setTimeout("remove_flash()",1000);
}

gb('');

var n0a = "<a href='javascript:na()' onmouseover='na(0,"+'"n0';
var n0b = '"'+")' onmouseout='na(1,"+'"n0';
var n0c = '"'+")' onmousedown='eh(2,"+'"n0';
var n0d = '"'+")' id='n0";

var n1a = "<a href='javascript:na()' onmouseover='na(0,"+'"n1';
var n1b = '"'+")' onmouseout='na(1,"+'"n1';
var n1c = '"'+")' onmousedown='eh(2,"+'"n1';
var n1d = '"'+")' id='n1";

var n2a = "<a href='javascript:na()' onmouseover='na(0,"+'"n2';
var n2b = '"'+")' onmouseout='na(1,"+'"n2';
var n2c = '"'+")' onmousedown='eh(2,"+'"n2';
var n2d = '"'+")' id='n2";

var n3a = "<a href='javascript:na()' onmouseover='na(0,"+'"n3';
var n3b = '"'+")' onmouseout='na(1,"+'"n3';
var n3c = '"'+")' onmousedown='eh(2,"+'"n3';
var n3d = '"'+")' id='n3";

var n4a = "<a href='javascript:na()' onmouseover='na(0,"+'"n4';
var n4b = '"'+")' onmouseout='na(1,"+'"n4';
var n4c = '"'+")' onmousedown='eh(2,"+'"n4';
var n4d = '"'+")' id='n4";

var n5a = "<a href='javascript:na()' onmouseover='na(0,"+'"n5';
var n5b = '"'+")' onmouseout='na(1,"+'"n5';
var n5c = '"'+")' onmousedown='eh(2,"+'"n5';
var n5d = '"'+")' id='n5";

var nse = "' class='noted'>";
var eas = "</a>";