function tog(idNum,moreImgSrc,lessImgSrc) {
  var showHideDiv=document.getElementById('showHideSection'+idNum);
  var showHideImg=document.getElementById('showHideSectionImg'+idNum);
  if (showHideDiv.className=='showElement') {
	showHideDiv.className='hideElement';
    showHideImg.src=moreImgSrc;
  } else {
	showHideDiv.className='showElement';
	showHideImg.src=lessImgSrc;
  }
}

function initOnClicks(el) {
  var elImg = el.getElementsByTagName('img');
  var elImgId = 1;
  for (var i=0; i<elImg.length; i++) {
    if (elImg[i].id == 'showHideSectionImg'+elImgId) {
      if (document.getElementById('videoList')) {
        elImg[i].onclick=function() {tog(this.number,'/images/info-button.gif','/images/info-button.gif');};
      } else {
    	elImg[i].onclick=function() {tog(this.number,'/images/more-button.gif','/images/less-button.gif');};
      }
      elImg[i].number=elImgId;
      elImg[i].style.cursor='pointer';
      elImgId++;
    }
  }
}

if (document.getElementById && document.getElementsByTagName)
  window.onload=function() {
	if (document.getElementById('homepageNews')) { initOnClicks(document.getElementById('homepageNews')); }
	if (document.getElementById('videoList'))    { initOnClicks(document.getElementById('videoList')); }

    navRoot = document.getElementById("menu").firstChild;
    for (var i=0; i<navRoot.childNodes.length; i++) {
      node = navRoot.childNodes[i];
      if (node.nodeName=="LI") {
        node.onmouseover=function() {
          this.className+=" over";
        };
        node.onmouseout=function() {
          this.className=this.className.replace("over", "");
        };
      }
    }
  };