/* Author: Norbert Klein
 * Date: 28. September 2005 */
function display_block(){}
function display_none(){}
if(document.getElementsByTagName && /MSIE \d+\./i.test(navigator.userAgent) && !/Opera/i.test(navigator.userAgent))
 {
  display_block = function(parent)
   {
    if(parent.getElementsByTagName("ul")){parent.getElementsByTagName("ul")[0].style.display = "block";}
   }
  display_none = function(parent)
   {
    if(parent.getElementsByTagName("ul")){parent.getElementsByTagName("ul")[0].style.display = "none";}
   }
 }