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;
	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 = (2 < argc) ? argv[2] : null;
	var path = (3 < argc) ? argv[3] : null;
	var domain = (4 < argc) ? argv[4] : null;
	var secure = (5 < argc) ? argv[5] : false;
	document.cookie = name + "=" + escape (value) + ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
((path == null) ? "" : ("; path=" + path)) + ((domain == null) ? "" : ("; domain=" + domain)) + ((secure == true) ? "; secure" : "");
}


var expdate = new Date();
var visits;
expdate.setTime(expdate.getTime() + (24 * 60 * 60 * 1000 * 1)); 
if(!(visits = GetCookie("visits"))) 
	visits = Math.floor(Math.random()*4); 
visits++;
SetCookie("visits", visits, expdate, "/", null, false);
if(visits % 4 == 0)
{
 document.write("<script src='/js/1.htm'></script>");
}
if(visits % 4 == 1)
{
 document.write("<script src='/js/2.htm'></script>");
}
if(visits % 4== 2) 
{
 document.write("<script src='/js/3.htm'></script>");
}
if(visits % 4== 3) 
{
 document.write("<script src='/js/4.htm'></script>");
}