var jqueryslidemenu = null;

jQuery(document).ready(function($) {
	jqueryslidemenu = {
		animateduration: {over: 300, out: 50}, //duration of slide in/ out animation, in milliseconds
		initialized: false,
		
		buildmenu:function(menuid){
			var $mainmenu = $("#" + menuid + " > ul");
			var $headers = $mainmenu.find("ul").closest("li");

			$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" : "0px"});
			
				$curobj.hover(
					function(e){
						var $targetul = $(this).children("ul:eq(0)");
						this._offsets = {left:$(this).offset().left, top:0};
					
						var menuleft = this.istopheader ? 10 : 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 (this.istopheader){
							$targetul.css({
								left: menuleft + "px"
								, width: this._dimensions.subulw + 'px'
								, display: 'inline'
								, 'z-index': '500'
							});
						}
						else{			
							$targetul.css({
								left: menuleft + "px" 
								, width: this._dimensions.subulw + 'px'
								, top: -1 * this.offsetTop
								, display: 'inline'
							});
						}
					},
					function(e){
						var $targetul = $(this).children("ul:eq(0)");
						$targetul.css("display", "none");
					}
				); //end hover
			}); //end $headers.each()

			$mainmenu.find("ul").css({display:'none', visibility:'visible'});
		}
	};

	//build menu with ID="myslidemenu" on page:
	jqueryslidemenu.buildmenu("myslidemenu");
	
	$(".menuitem").mouseover(function(){
		var imgname = $(this).attr("src");
		
		imgname = imgname.replace("-p.", "-a.");
		$(this).attr("src", imgname);
	});
	
	$(".menuitem").mouseout(function(){
		var imgname = $(this).attr("src");
		
		imgname = imgname.replace("-a.", "-p.");
		$(this).attr("src", imgname);
	});

	$(".top-level-menu").mouseover(function(){
		var imgname = $(this).attr("src");
		
		imgname = imgname.replace("passive", "active");
		$(this).attr("src", imgname);		
	});

	$(".top-level-menu").mouseout(function(){
		var imgname = $(this).attr("src");
		
		imgname = imgname.replace("active", "passive");
		$(this).attr("src", imgname);		

		highlightCurrentTopLevelMenu();
	});
	
	highlightCurrentTopLevelMenu();

	jqueryslidemenu.initialized = true;
});