function hrefvnovookno() {

 if (!document.getElementsByTagName) return;
 
var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
  var anchor = anchors[i];
   if (anchor.getAttribute("href") && anchor.getAttribute("class") == "vnovookno")
   {
    anchor.target = "_blank";
   }
 }
}



function addEvent(obj, evType, fn){ 
 if (obj.addEventListener){ 
   obj.addEventListener(evType, fn, false); 
   return true; 
 } else if (obj.attachEvent){ 
   var r = obj.attachEvent("on"+evType, fn); 
   return r; 
 } else { 
   return false; 
 } 
}

addEvent(window, 'load', hrefvnovookno);