var left = 1;
var expDays = 30;
var exp = new Date(); 
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
//alert('exp = '+exp);
function dv()
{
	var e = document.getElementById("imn");
	e.style.visibility = "visible";
}

function sp()
{
	SetCookie('img', 'null', exp);
}
function my_visible(num)
	{
		var e = document.getElementById("center");
		e.src = "image/" + num + ".jpg";
		var m = document.getElementById("imn");
		m.style.visibility = "hidden";
			e.style.visibility = "visible";	
			var ee=document.getElementById("ri");
			if (num !="34") {ee.style.visibility = "visible";} else{ee.style.visibility = "hidden";}
			var ee=document.getElementById("le");
			if (num !="1") {ee.style.visibility = "visible";} else{ee.style.visibility = "hidden";}
			//ee.style.visibility = "visible";
			left=num; 
		SetCookie('img', num, exp);	
	}


function my_click(index)
	{
	//alert(left);
		if(left<=34)
		{
		if(left>=1){
			if(index == 0)
			{
				var e;	
				e = document.getElementById("center");
				e.src = "image/" + (left+1) + ".jpg";
				left++;	
				SetCookie('img', left, exp);
			}
			if(index == 1 && left!=1)
			{
				var e;
				e = document.getElementById("center");
				e.src = "image/" + (left-1) + ".jpg";
				left = left - 1;
				SetCookie('img', left, exp);
			}
			
			if(left == 34)
			{
				var e;
				e = document.getElementById("ri");
				e.style.visibility = "hidden";
			}
			else
			{
				var e;
				e = document.getElementById("ri");
				e.style.visibility = "visible";
			}
			if(left ==1)
			{
				var e;
				e = document.getElementById("le");
				e.style.visibility = "hidden";
			}
			else
			{
				var e;
				e = document.getElementById("le");
				e.style.visibility = "visible";
			}	
		}
		}
	}

function img(){

//DeleteCookie("user");
var favImg = GetCookie('img');  
//alert('favImg'+favImg);
var b = GetCookie('session');
//alert(b+'a');
if (b=='yes') {
if (favImg == 'null'){SetCookie('img', favImg, exp);}
else SetCookie('img', 'null', exp);
favImg = GetCookie('img');  
SetCookie('session', 'null')
}
//alert('document.cookie = '+document.cookie);

document.bgColor=favImg;
/*alert('num = '+num);
var s = document.cookie.indexOf (";");
	var endstr = document.cookie.substring(0, s);
	var n = endstr.indexOf("=");
	var a = endstr.substring(n+1);
	alert('img = '+a);
my_visible(num);*/
return favImg;
}

function getCookieVal (offset) {  
var endstr = document.cookie.indexOf (";", offset);  
if (endstr == -1)    
endstr = document.cookie.length;  
return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {  
var arg = name + "=";  
var alen = arg.length;  
//alert('document.cookie = '+document.cookie);
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, exp) {  
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 () {  
var exp = new Date();  
exp.setTime (exp.getTime() - 1);  
var cval = GetCookie ('session');  
document.cookie = 'session' + "=" + cval + "; expires=" + exp.toGMTString();
}