/*  */

var UndoList = new Array();
var UndoCount = 0;

function j1()
{	
	if (!document.getElementById) 
		return true;

	p=new Array(9);
	a=new Array(9);
	m=new Array(9);
	
	for (x=0; x<9; x++) {
		p[x]=new Array(9);
		a[x]=new Array(9);
		m[x]=new Array(9);
	}
	
	c=0;
	h=cheat;

	for (x=0; x<9; x++) {
		for (y=0; y<9; y++) {
			e=document.getElementById('f'+x+y);
			v=parseInt(e.value);
			
			if ((e.value.length==1)&&(v>=1)&&(v<=9)) {
				p[x][y]=v;
				if (!e.readOnly)
					c++;
					
			} else
				p[x][y]=0;
			
			v=parseInt(h.charAt(y*9+x));
			
			if ((v>=1)&&(v<=9))
				a[x][y]=v;
			else
				a[x][y]=0;
		
			m[x][y]=0;
		}
	}
		
	for (x=0; x<9; x++) {
		s=new Array(10);
		k=false;
		
		for (y=0; y<9; y++)
			if (p[x][y]>0) {
				if (s[p[x][y]])
					k=true;
				else
					s[p[x][y]]=true;
			}
		
		if (k)
			for (y=0; y<9; y++)
				m[x][y]++;
	}
	
	for (y=0; y<9; y++) {
		s=new Array(10);
		k=false;
		
		for (x=0; x<9; x++)
			if (p[x][y]>0) {
				if (s[p[x][y]])
					k=true;
				else
					s[p[x][y]]=true;
			}
		
		if (k)
			for (x=0; x<9; x++)
				m[x][y]++;
	}
	
	for (i=0; i<3; i++)
		for (j=0; j<3; j++) {
			s=new Array(10);
			k=false;
			
			for (x=i*3; x<(i*3+3); x++)
				for (y=j*3; y<(j*3+3); y++)
					if (p[x][y]>0) {
						if (s[p[x][y]])
							k=true;
						else
							s[p[x][y]]=true;
					}
			
			if (k)
				for (x=i*3; x<(i*3+3); x++)
					for (y=j*3; y<(j*3+3); y++)
						m[x][y]++;
		}
	
	t=0;
	w=0;
	n=0;
	
	for (x=0; x<9; x++) {
		for (y=0; y<9; y++) {
			s=m[x][y];

			if (w_c)
				if ((p[x][y]>0)&&(a[x][y]>0))
					if (p[x][y]!=a[x][y]) {
						w++;
						
						if (w_s)
							s++;
					}

			if (s>3)
				s=3;
			
			t+=m[x][y];

			e=document.getElementById('f'+x+y);
			e.className=e.className.charAt(0)+s;
			e=document.getElementById('c'+x+y);
			e.className=e.className.charAt(0)+s;
			
			if (p[x][y]==0)
				n++;
		}
	}
	
	if (t>0) {
		g=m_m;
		document.getElementById('errors').value++;

	} else if (w>0) {
		g=m_w;
		g=g.replace('*', w);
		document.getElementById('errors').value++;

	} else if (n>0) {
		if (c>0) {
			g=m_i;
			g=g.replace('*', n);
			if (n==1)
				g=g.replace('cells', 'cell');
		} else
			g=m_d;
	} else {
		g=m_x;	
//		return true;
	}
	document.getElementById('message').innerHTML=g;	
	
	SelCurrCell();

	return false;
}

function j2()
{
	if (!document.getElementById) 
		return true;

	for (x=0; x<9; x++) {
		for (y=0; y<9; y++) {
			e=document.getElementById('f'+x+y);

			if (!e.readOnly)
				e.value='';
			
			e.className=e.className.charAt(0)+'0';
			
			e=document.getElementById('c'+x+y);
			e.className=e.className.charAt(0)+'0';
		}
	}
	
	document.getElementById('message').innerHTML=m_c;
	
	return false;
}

var t_o=0;

function j3(t)
{
	document.onkeydown=j6;

	if (t>=0) {
		d=new Date();
		t_o=d.getTime()/1000-t;
		j4();
	}
}

function j4()
{
	if (document.getElementById('timer'))
		if (t_o>0) {
			d=new Date();
			t=Math.round(d.getTime()/1000-t_o);
			m=Math.floor(t/60);
			s=t%60;
			
			document.getElementById('timer').innerHTML='- <B>'+m+':'+((s<10) ? '0' : '')+s+'</B> -';
			
			setTimeout("j4()", 1000);
		}
}

function j5(f)
{	
	if (f.value.length>3) {
		f.className='v'+f.className.substr(1,10);
	} else if (f.value.length>1) {
		f.className='w'+f.className.substr(1,10);
	} else {
		f.className='d'+f.className.substr(1,10);
	}
}

function j6(e)
{
	if (!e) e=window.event;
	
	t=e.target ? e.target : e.srcElement;
	
	if (t) {
		k=e.keyCode;
		i=t.id;
		
		if ((i.charAt(0)=='f')&&(k>=37)&&(k<=40)) {
			g=true;
			
			if (k%2) {
				dx=k-38;
				l=t.value.length;
				
				if (l>0) {
					if (t.selectionStart || t.selectionStart=='0') {
						sp=t.selectionStart;
						ep=t.selectionEnd;
					} else if (document.selection && document.selection.createRange) {
						r=document.selection.createRange();
						sl=r.text.length;
						r.moveStart('character', -l);
						ep=r.text.length;
						sp=ep-sl;
					} else
						g=false;
						
					if ((dx<0)&&(ep>0))
						g=false;
						
					if ((dx>0)&&(sp<l))
						g=false;
				}
			}
			
			if (g) {
				x=parseInt(i.charAt(1));
				y=parseInt(i.charAt(2));
				
				for (r=1; r<9; r++) {
					if (k%2)
						x=(9+x+k-38)%9;
					else
						y=(9+y+k-39)%9;
					
					n=document.getElementById('f'+x+y);
					
					if (n&&(!n.readOnly)) {
						n.select();
						
						if (window.event) {
							window.event.cancelBubble=true; 
						}

						if (e.stopPropagation)
							e.stopPropagation();
							
						break;
					}
				}
			}
		}
	}
}

function j7(i)
{
	if (i==1)
		s="Are you sure you want to reset the statistics for this level?";
	else if (i==2)
		s="Are you sure you want to clear the puzzle?";
	else
		s="Are you sure?";
		
	return confirm(s);
}

function j8(f)
{
	oVal = f.name;
	s="         ";
	
	if (f.value.length>0)
		if (f.value==s.substring(0, f.value.length))
			f.value="";

//alert(f.name + " : " + oVal + " : " + UndoList.length);
	if (f.value != "")
	{
//alert("Add Undo Value");
//		UndoList[UndoList.length] = f;
		UndoList[UndoCount] = f;
		UndoCount++;
//alert(UndoList[UndoList.length - 1]);
	}
//alert("UndoList.length 1: " + UndoList.length);
}

function UndoLast()
{
	if (UndoCount > 0)
	{
//	var LastElement = UndoList.length - 1;
	var LastElement = UndoCount - 1;
	UndoField = UndoList[LastElement];
//alert(UndoField);
	UndoField.value = "";
//	UndoField.slice(-1, 1);
	UndoCount--;
//alert("UndoList.length 2: " + UndoList.length);
	}
	
	return false;
}

function ClearAll()
{
	while (UndoCount > 0)
	{
//	var LastElement = UndoList.length - 1;
	var LastElement = UndoCount - 1;
	UndoField = UndoList[LastElement];
//alert(UndoField);
	UndoField.value = "";
//	UndoField.slice(-1, 1);
	UndoCount--;
//alert("UndoList.length 2: " + UndoList.length);
	}
	ClearAllTags();
	document.getElementById('message').innerHTML = "";	
	
	return false;
}