//常用JS	
	//用户注册及登录框
	//update @ 2010-3-5 by zhyp	
	var isIe=(document.all)?true:false;
	
	function getCookieVal(offset) {
		var endstr = document.cookie.indexOf (";", offset);
		if (endstr == -1) endstr = document.cookie.length;
		return decodeURI(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;
	}
	//将浏览动作写入cookie
	function setCookie (name, value) {
		var exp = new Date();
		exp.setTime (exp.getTime()+3600000000);

		document.cookie = name + "=" + encodeURI(value) + "; expires=" + exp.toGMTString()+"; path=/";
	}
	//tab切换
	function selectTable(labName,contentName,labID)
	{
		var $a=document.getElementById(labName).getElementsByTagName("a");
		var $ul=document.getElementById(contentName).getElementsByTagName("ul");
		for(i=0;i<$ul.length;i++)
		{
			$a[i].className=i==labID?"active":"";
			$ul[i].style.display=i==labID?"block":"none";
		}
	}