common.js

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function deletecookie(name) //删除名称为name的Cookie 
{
    var exp = new Date(); 
	exp.setTime (exp.getTime() - 1); 
	var cval = getcookie(name); 
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString(); 
} 


function clearcookie() //清除COOKIE 
{ 
	var temp=document.cookie.split(";"); 
	var loop3; 
	var ts; 
	for (loop3=0;loop3;){ 
	   ts=temp[loop3].split("=")[0]; 
	   if (ts.indexOf('mycat')!=-1) 
	      deletecookie(ts); //如果ts含“mycat”则执行清除 
	} 
} 


function getcookieval(offset)  //取得项名称为offset的cookie值 
{
	var endstr = document.cookie.indexOf (";", offset); 
	if (endstr == -1) 
	endstr = document.cookie.length; 
	return unescape(document.cookie.substring(offset, endstr)); 
} 


function getcookie(name) //取得名称为name的cookie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; 
}


var tID=0;
function ShowTabs(ID){