function prepareTargetBlank(){
   var className = 'videolink';
   var as = document.getElementsByTagName('a');
   for(i=0;i<as.length;i++){
      var a = as[i];
      r=new RegExp("(^| )"+className+"($| )");
      if(r.test(a.className)){
         a.onclick = function(){
            window.open(this.href, "ventana2", "status=no, location=no, menubar=no, scrollbars=no, 	left=500px, top=200px, width=376, height=400");
            return false;
         }
      }
    }
}
   
window.onload = prepareTargetBlank;
   

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}