var timer1 = 500;
var closeMenu = 0;
var ddmenuitem = 0;

function showMenu(id) {	
	stoptimer();
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';
}

function hideMenu() {
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}

function closetimer() {
	closeMenu = window.setTimeout(hideMenu, timer1);
}

function stoptimer() {
	if(closeMenu)
	{
		window.clearTimeout(closeMenu);
		closeMenu = null;
	}
}

if(document.images) {
  var image_array = new Array();
	
  // path to the directory with images
  var path = '../www.layeredtech.com/_img/graphics/navbar/';

  // enumeration of the "active" images
  image_array[0] = path + "cloud-computing-on.gif";
  image_array[1] = path + "dedicated-hosting-on.gif";
  image_array[2] = path + "why-layered-tech-on.gif";
  image_array[3] = path + "support-on.gif";
  image_array[4] = path + "resources-on.gif";
  image_array[5] = path + "about-on.gif";

  var preload_image = new Array ();
 
  for(var i=0; i<image_array.length; i++) {
    preload_image[i]= new Image();
    preload_image[i].src = image_array[i];
  }
}

function rollover(name, filename) {
  var fullpath = '../www.layeredtech.com/_img/graphics/navbar/' + filename;
  document.images[name].src = fullpath;
}

document.onclick = hideMenu;