<!--
function ppkCreate(name,value,days) {
    var expires="";
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	var domain="";
	if(top.location.href.indexOf("51mdq.com")>-1){
	    domain=";domain=.51mdq.com";
	} 
	document.cookie = name+"="+value+expires+"; path=/"+domain;
}

function ppkRead(name,second) {
    if(!second){
	    var nameEQ = name + "=";
	    var ca = document.cookie.split(';');
	    for(var i=0;i < ca.length;i++) {
		    var c = ca[i];
		    while (c.charAt(0)==' ') c = c.substring(1,c.length);
		    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	    }
	    return null;
	}else{
	    var val=ppkRead(name);
	    if(val){
		    var arr=val.split('&');
		    for(var i=0,len=arr.length;i<len;i++){
			    if(arr[i].indexOf(second)>-1){
				    return arr[i].substring(arr[i].indexOf("=")+1);
			    }
		    }
		    return null;
	    }
	    return null;
	}
}

function ppkErase(name){
	ppkCreate(name,'',-100);
}

//用户中心退出
function ppkUserQuit(){
    ppkErase("UserInfo");
    top.location.href="/";
}
//-->