/*
 * 29/10/2009
 *
 
 Esempio di utilizzo:
 
   <a href="/index.php?page=area_operations" 
      onMouseOver="showImage('cube1','/images/cube_1_col.png')" 
      onMouseOut="showImage('cube1','/images/cube_1.png')">
   
      <img src="/images/cube_1.png" border="0" name="cube1">
   
   </a>
 
 */
 
function showImage(imagename, filename) 
{
   document.images[imagename].src = filename;
}