$(document).ready(function () {
    $('li.headlink').hover(
	    function () {
	        $('ul', this).fadeIn(100);
	    },
	    function () {
	        $('ul', this).fadeOut(100);
	    }
    ).children("ul").children("li").hover(
        function () { $(this).addClass("menudropdown-hover"); },
        function () { $(this).removeClass("menudropdown-hover"); }
    );

    $('.menuImg').hover(
        function () {
            var src = $(this).attr('src');
            $(this).attr('src', src.substring(0,src.length-4) + '-hover' + src.substring(src.length-4)); 
        },
        function () {
            var src = $(this).attr('src');
            $(this).attr('src', src.substring(0, src.length - 10) + src.substring(src.length-4));
         }
    );
});

// Preload images using jQuery
(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)

jQuery.preLoadImages('images/menu-home-hover.jpg','images/menu-classes.jpg','images/menu-registration.jpg','images/menu-about.jpg','images/menu-contact.jpg','leftmenu-calendars-hover.png','leftmenu-events-hover.png','leftmenu-fieldtrips-hover.png','leftmenu-forms-hover.png','leftmenu-newsletters-hover.png','leftmenu-scholarships-hover.png','leftmenu-snuggle-hover.png','leftmenu-volunteers-hover.png','leftmenu-world-hover.png');