/**
 *source: http://michaelraichelson.com/portfolio/code/automatic-website-navigation-highlight.php
*/
function donavhighlights(){
  if(!document.layers){
    var atags=document.getElementsByTagName("span");
      for(var i=0;i<atags.length;i++){
         if(atags[i].parentNode.className=="domMenuMain_menuElement"){
            if(atags[i].innerHTML.toLowerCase()==top_page_name){
               atags[i].parentNode.id="activeTopMenuElement";
            }
         }
      }
  }
}