function hints(product, identifier){  
  var hint = document.getElementById(identifier);    
  hint.style.display='block';  
  product.onmouseout = function(){hint.style.display='none';}
  hint.onmouseover = function(){hint.style.display='block'; product.onmouseout = '';}
  hint.onmouseout = function(){hint.style.display='none';}
 }