/* preloadImages function */

(function($) {
  var cache = [];
  // Arguments are image paths relative to the current page.
  $.preLoadImages = function() {
    var args_len = arguments.length;
    for (var i = args_len; i--;) {
      var cacheImage = document.createElement('img');
      cacheImage.src = arguments[i];
      cache.push(cacheImage);
    }
  }
})(jQuery)


/* Navigation code */

$(document).ready(function() {
	
	jQuery.preLoadImages('/images/btn_k12_over.gif');
	
	$('.subnav').hide();
	
	var vis;
	var timeout;
	
	$('#navbar>ul>li').hover(
		function() {
			clearTimeout(timeout);
			$('.subnav').hide();			
			var tab = $('.subnav', this);
			tab.show();
			vis = this;
		},
		function() {
			timeout = setTimeout(hideTabs, 1000);
		}
	);
	
	function hideTabs() {
		$('.subnav').fadeOut();
	}
	
});