// JavaScript Document
function setCookie(name,value,expires){//名字 值 过期时间
	var expDays = expires*24*60*60*1000;
	var expDate = new Date();
	expDate.setTime(expDate.getTime()+expDays);
	var expString = expires?";expires="+expDate.toGMTString():"";
	var pathString = ";path=/";
	document.cookie = name + "=" + escape(value) + expString + pathString;
}

function getCookie(name){
	var mycookie = document.cookie; 
	var start1	= mycookie.indexOf(name + "=");
	var sValue;
	if (start1== -1)
		sValue	= "";
	else{
		start	= mycookie.indexOf("=",start1)+1; 
		var end	= mycookie.indexOf(";",start);
		if (end==-1){
			end	= mycookie.length;
		}
		var value	= unescape(mycookie.substring(start,end));
		if (value == null){
			sValue	= "";
		}else{
			sValue	= value;
		}
	}
	return sValue;
}