function toggleLayer( whichLayer )
{
  var elem, vis;
  if( document.getElementById ) // this is the way the standards work
    elem = document.getElementById( whichLayer );
  else if( document.all ) // this is the way old msie versions work
      elem = document.all[whichLayer];
  else if( document.layers ) // this is the way nn4 works
    elem = document.layers[whichLayer];
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}

$(document).ready(function(){
//disjointed rollover function starting point
$("div#button li").hover(function(){
	//make a variable and assign the hovered id to it
	var elid = $(this).attr('id');
	//hide the image currently there
	$("div#images div").hide();
	//fade in the image with the same id as the selected buttom
	$("div#images div#" + elid + "").fadeIn("fast");

	});

});