var arrowimages = { down: ['downarrowclass', '../images/down.gif', 23], right: ['../images/rightarrowclass', 'right.gif'] }

var jqueryslidemenu = {

  animateduration: { over: 200, out: 100 }, //duration of slide in/ out animation, in milliseconds

  buildmenu: function (menuid, arrowsvar) {
    jQuery(document).ready(function ($) {
      var $mainmenu = $("." + menuid + ">ul");
      var $headers = $mainmenu.find("ul").parent();
      $headers.each(function (i) {
        var $curobj = $(this)
        var $subul = $(this).find('ul:eq(0)')
        this._dimensions = { w: this.offsetWidth, h: this.offsetHeight, subulw: $subul.outerWidth(), subulh: $subul.outerHeight() }
        this.istopheader = $curobj.parents("ul").length == 1 ? true : false
        $subul.css({ top: this.istopheader ? this._dimensions.h + "px" : 0 })
        $curobj.hover(
				function (e) {
				  var $targetul = $(this).children("ul:eq(0)")
				  this._offsets = { left: $(this).offset().left, top: $(this).offset().top }
				  var menuleft = this.istopheader ? 0 : this._dimensions.w
				  menuleft = (this._offsets.left + menuleft + this._dimensions.subulw > $(window).width()) ? (this.istopheader ? -this._dimensions.subulw + this._dimensions.w : -this._dimensions.w) : menuleft
				  if ($targetul.queue().length <= 1) //if 1 or less queued animations
				    $targetul.css({ left: menuleft + "px", width: this._dimensions.subulw + 'px' }).slideDown(jqueryslidemenu.animateduration.over)
				},
				function (e) {
				  var $targetul = $(this).children("ul:eq(0)")
				  $targetul.slideUp(jqueryslidemenu.animateduration.out)
				}
			) //end hover
      }) //end $headers.each()
      $mainmenu.find("ul").css({ display: 'none', visibility: 'visible' })
    }) //end document.ready
  }
}

//build menu with ID="myslidemenu" on page:

jqueryslidemenu.buildmenu("slidemenu", arrowimages);

function changeParentStyle(el) {
  var parentMenuItem = el.parentNode.childNodes[0];
  parentMenuItem.className = "currentSubmenu";
}
function restoreParentStyle(el) {
  $(".currentSubmenu").removeClass("currentSubmenu").addClass("aMainMenu");
}

$(document).ready(function () {
  $(".aMainMenu").bind("mouseleave", function () {
    $("this").removeClass("currentSubmenu").addClass("aMainMenu");
  });

  $(".aMainMenu").bind("mouseenter", function () {
    $(".currentSubmenu").removeClass("currentSubmenu").addClass("aMainMenu");
  });

  $(".ulSubmenu").bind("mouseleave", function () {
    $(".currentSubmenu").removeClass("currentSubmenu").addClass("aMainMenu");    
  });
});