function  high(which){  
  theobject=which  
  highlighting=setInterval("highlightit(theobject)",80)  
  }  
  function  low(which){  
  clearInterval(highlighting)  
  which.filters.alpha.opacity=80  
  }  
  function  highlightit(cur){  
  if  (cur.filters.alpha.opacity<100)  
  cur.filters.alpha.opacity+=10  
  else  if  (window.highlighting)  
  clearInterval(highlighting)  
  }