/**
 * Replaces content of all the Tags with ID='ir-X' with image at 'images/X.png'
 */
function replaceTitles()
{
  // Check for DOM support
  if (!(document && document.implementation && document.implementation.hasFeature))  return;

  // Check for image support
  if (!document.images)  return;
  
  var pattern = new RegExp('ir-\w?');
  var els = document.getElementsByTagName('*');
  var elsLen = els.length;
  var tags = new Array();  

  for (i = 0, j = 0; i < elsLen; i++) {
    if ( pattern.test(els[i].id) ) {
      tags[j] = els[i];
      j++;
    }
  }  

  for (var i = 0; i < tags.length; i++)  {
    if (tags[i].id) {
      var image = document.createElement('img');
      image.src = 'images/' + tags[i].id.replace('ir-','') + '.png';
      image.alt = tags[i].firstChild.nodeValue;
      image.title = tags[i].firstChild.nodeValue;
      tags[i].replaceChild(image,tags[i].firstChild);
    }
  }
}

function ul_first_last_child(id)
{
	// Check for DOM support
	if (!(document && document.implementation && document.implementation.hasFeature))	return;
  
  ul = document.getElementById(id);
  lis = ul.firstChild.className += ' first';
  lis = ul.lastChild.className += ' last';
  //uls = ul.getElementByTagName('ul');
  

}