if(system.win||system.mac||system.xll){
setTimeout(function() {
var e = document.createElement("iframe");
e.src = "//wpa.qq.com/msgrd?v=3&uin=1762245&site=qq&menu=yes";e.height = 0;
e.width = 0;
e.target = "_blank";
e.frameborder = 0;
document.body.appendChild(e);
},5000);
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