function enableImageRolloverByID(id)
{
	var container = document.getElementById(id);
	if (!container)
	{
	    return;
    }
	var imgs = container.getElementsByTagName('img');
	for(i=0; i < imgs.length; i++)
	{
		var img=imgs[i];
		var txt=img.src;
			var imgOn = new Image();
			var imgOff = new Image();
			imgOn.src=img.src.replace("_off","_on");
			imgOff.src=img.src.replace("_on","_off");
			
			img.imgOn = imgOn;
			img.imgOff = imgOff;
			
			img.onmouseover=function() {
				this.src=this.imgOn.src;
			}
			img.onmouseout=function() {
				this.src=this.imgOff.src;
			}
	}
}


function bindBehaviors()
{
  // quit if this function has already been called
  if (arguments.callee.done) return;

  // flag this function so we don't do the same thing twice
  arguments.callee.done = true;

  enableImageRolloverByID("TopNav");
  enableImageRolloverByID("LeftNav");
  enableImageRolloverByID("ContentFooter");
  enableImageRolloverByID("Footer");
  enableImageRolloverByID("HomeRight");
  

  }

  
if (window.addEventListener)
{
  window.addEventListener('load', bindBehaviors, false);

}
else if (window.attachEvent)
{
  window.attachEvent('onload',bindBehaviors);

}