<!--
	function newImage(imgSrc) {
		var imgName = new Image();
		imgName.src = imgSrc;
		return imgName;
	}
	var preloadFlag = false;
	function preloadImages() {
		if (document.images) {
			var curbut;
			pre_img1_out = newImage('/images/menu/attendee_off.gif');
			pre_img1_over = newImage('/images/menu/attendee_on.gif');
			pre_img2_out = newImage('/images/menu/exhibitor_off.gif');
			pre_img2_over = newImage('/images/menu/exhibitor_on.gif');
			pre_img3_out = newImage('/images/menu/presenter_off.gif');
			pre_img3_over = newImage('/images/menu/presenter_on.gif');			
			pre_img4_out = newImage('/images/menu/media_off.gif');
			pre_img4_over = newImage('/images/menu/media_on.gif');
			preloadFlag = true;
		}
	}

	function changeImages(strEleId, strFile) {
		var ele = document.getElementById(strEleId);
		ele.src = strFile;
	}
	function siteInit() {
		preloadImages();
		var curbut;
		if (document.getElementById("attendee_button")) {
			curbut = document.getElementById("attendee_button");
			curbut.onmouseover = function() {
				changeImages('attendee_button','/images/menu/attendee_on.gif');
				return true;
			}
			curbut.onmouseout = function() {
				changeImages('attendee_button','/images/menu/attendee_off.gif');
				return true;
			}
		}
		if (document.getElementById("exhibitor_button")) {
			curbut = document.getElementById("exhibitor_button");
			curbut.onmouseover = function() {
				changeImages('exhibitor_button','/images/menu/exhibitor_on.gif');
				return true;
			}
			curbut.onmouseout = function() {
				changeImages('exhibitor_button','/images/menu/exhibitor_off.gif');
				return true;
			}
		}
		if (document.getElementById("presenter_button")) {
			curbut = document.getElementById("presenter_button");
			curbut.onmouseover = function() {
				changeImages('presenter_button','/images/menu/presenter_on.gif');
				return true;
			}
			curbut.onmouseout = function() {
				changeImages('presenter_button','/images/menu/presenter_off.gif');
				return true;
			}
		}		
		if (document.getElementById("media_button")) {
			curbut = document.getElementById("media_button");
			curbut.onmouseover = function() {
				changeImages('media_button','/images/menu/media_on.gif');
				return true;
			}
			curbut.onmouseout = function() {
				changeImages('media_button','/images/menu/media_off.gif');
				return true;
			}
		}
	}
-->