js调用广告代码

var topadall=function(){
    /*
    document.writeln("<script async src=\‘//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js\‘></script>");
    document.writeln("<script>");
    document.writeln("  (adsbygoogle = window.adsbygoogle || []).push({");
    document.writeln("    google_ad_client: \‘ca-pub-7281907572232137\‘,");
    document.writeln("    enable_page_level_ads: true");
    document.writeln("  });");
    document.writeln("</script>");
    */
},

artleft_1=function(){
},
artleft_2=function(){
},
artleft_3=function(){
},