function changeto(highlightcolor){
   if (document.all) {
    source=event.srcElement;
    if (source.tagName=="TR"||source.tagName=="TABLE")
     return;
    while(source.tagName!="TD")
    source=source.parentElement;
    if (source.style.backgroundColor!=highlightcolor&&source.id!="ignore")
     source.style.backgroundColor=highlightcolor;
   }
  }

  function changeback(originalcolor){
   if (document.all) {
    if (event.fromElement.contains(event.toElement)||source.contains(event.toElement)||source.id=="ignore")
     return;
    if (event.toElement!=source)
     source.style.backgroundColor=originalcolor;
   }
  }