function SetCookie (name, value,exDate) {  
	var argv = SetCookie.arguments;  
	var argc = SetCookie.arguments.length;  
	var expires = null;
	if(exDate!=""){
		expires = new Date;
		expires.setMonth(expires.getMonth()+exDate);
	}
	var path = "/";  
	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 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)
{
	if(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;
}