function GetCookieVal(offset) 
//获得Cookie解码后的值 
{ 
    var endstr = document.cookie.indexOf (";", offset); 
    if (endstr == -1) 
        endstr = document.cookie.length; 
    return unescape(document.cookie.substring(offset, endstr)); 
} 
function SetCookie(name, value) 
//设定Cookie值 
{ 
    var expdate = new Date(); 
    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; 
    //var expires1 = new Date()
    //expires1.setTime(today.getTime() + 1000*60*60*24*365*10)
    //if(expires!=null) expdate.setTime(expdate.getTime() + ( expires * 1000 )); 
    if(expires!=null) expdate.setTime(expdate.getTime() + ( expires * 1000 )); 
    document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString())) 
    +((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain)) 
    +((secure == true) ? "; secure" : "");
} 

function DelCookie(name) 
//删除Cookie 
{ 
    var exp = new Date(); 
    exp.setTime (exp.getTime() - 1);
    var cval = GetCookie (name);
    document.cookie = name + "=" + cval + "; expires="+ exp.toGMTString(); 
}

function GetCookie(name) 
//获得Cookie的原始值 
{ 
    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 getCookieValue(Parent,Child)
{
	var group = GetCookie(Parent).split("&");
	var reval = "";
	for(var i=0;i<group.length;i++)
	{
		var param = group[i].split("=");
		if(param[0].toLowerCase()==Child.toLowerCase()){
			reval = param[1];
			break;
		}
	}
	return reval;
}