//设置document.cookie='id='+id;读取GetCookie('id')=================

function SetCookie(id,v)
{
	document.cookie =id+"="+v+";";
}
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 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 changeStyle(name)
{
	css=document.getElementById('cssfile');
	css.href=name+".css";
}
function Menu(menuID)
{
	var menu =	document.getElementById(menuID);
	if (menu.style.display != "block")
	{
		menu.style.display = "block";
	}
	else
	{
		menu.style.display = "none";
	}
}