// JavaScript Document
var curNum;
var countBackgrounds = 5;

function onLoad(){
	var count = GetCookie('count');
	//alert(count);
	if(count == null) {
		curNum = Math.floor(Math.random()*countBackgrounds)+1;
		document.body.background="images/bg"+curNum+".jpg";
	}
	else{
		curNum = count;
		document.body.background="images/bg"+curNum+".jpg";
	}
	//alert(curNum);
}


function setBackground(num){
	if(num==0){
		document.body.background="images/bg0.jpg";
		SetCookie('count',0,exp);
	}
	else {
		new_num = num%countBackgrounds+1;
		document.body.background="images/bg"+new_num+".jpg";
		SetCookie('count',new_num,exp);
	}
}

function GetCookie (name) {  
	var arg = name + "=";  
	var alen = arg.length;  
	var clen = document.cookie.length;  
	var i = 0;  
	while (i < clen) {    
	var j = i + alen;    
	if (document.cookie.substring(i, j) == arg)      
		return getCookieVal (j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) break;   
	}  
	return null;
}
function SetCookie (name, value) {  
	var argv = SetCookie.arguments;  
	var argc = SetCookie.arguments.length;  
	var expires = (argc > 2) ? argv[2] : null;  
	var path = (argc > 3) ? argv[3] : null;  
	var domain = (argc > 4) ? argv[4] : null;  
	var secure = (argc > 5) ? argv[5] : false;  
	document.cookie = name + "=" + escape (value) + 
	((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
	((path == null) ? "" : ("; path=" + path)) +  
	((domain == null) ? "" : ("; domain=" + domain)) +    
	((secure == true) ? "; secure" : "");
}
function DeleteCookie (name) {  
	var exp = new Date();  
	exp.setTime (exp.getTime() - 1);  
	// This cookie is history  
	var cval = GetCookie (name);  
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}
var expDays = 1;
var exp = new Date(); 
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
/*
function amt(){
	var count = GetCookie('count')
	else {
		var newcount = parseInt(count) + 1;
		DeleteCookie('count')
		SetCookie('count',newcount,exp)
		return count
	}
}
*/
function getCookieVal(offset) {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
    endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
}




function popupWindow(url, w, h){
        window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=yes,statusbar=yes,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width='+w+',height='+h+',screenX=150,screenY=150,top=10,left=10');

}

<!--
function MM_swapImgRestore() { 
	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() { 
	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_swapImage() { 
	var i,j=0,x,a=MM_swapImage.arguments; 
	//alert(MM_findObj(a[0]).src);
	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 MM_findObj(n, d) { 
	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;
}
//-->