function frameHover(row_id) {
var currID=document.getElementById(row_id);
var hiddenEl=document.getElementById(row_id+'_pop');
  currID.style.backgroundImage='url(./files/img/horiz-bar.gif)';
  hiddenEl.style.visibility='visible';
  
}

function frameHover_out(row_id) {
var currID=document.getElementById(row_id);
var hiddenEl=document.getElementById(row_id+'_pop');
  currID.style.backgroundImage='none';
  hiddenEl.style.visibility='hidden';
}