$(document).ready(function() {
    /* position of the <li> that is currently shown */
    var current = 0;
		    
		//    var loaded  = 0;
		//    for(var i = 1; i <4; ++i)
		//	    $('<img />').load(function(){
		//		    ++loaded;
		//		    if(loaded == 3){
					    $('#bg1,#bg2,#bg3').mouseover(function(e){
						    
						    var $this = $(this);

						    /* item is bg1 or bg2 or bg3, depending where we are hovering */
						    var item = e.target.id;


						    /* if we hover the current one, then don't do anything */
						    if(current == 0 && item == 'bg1'){
							$('#menu .sub').animate({backgroundPosition:"(319px 0)"},300);
						    }
						    
						    /*
						    this is the sub menu overlay. Let's hide the current one
						    if we hover the first <li> or if we come from the last one,
						    then the overlay should move left -> right,
						    otherwise right->left
						     */
						    if(item == 'bg1' || current == 2)
							    $('#menu .sub'+parseInt(current+1)).stop().animate({backgroundPosition:"(-327px 0)"},300,function(){
								    $(this).find('li').hide();
							    });
						    else
							    $('#menu .sub'+parseInt(current+1)).stop().animate({backgroundPosition:"(327px 0)"},300,function(){
								    $(this).find('li').hide();
							    });

						    if(item == 'bg1' || current == 2){
							    /* if we hover the first <li> or if we come from the last one, then the images should move left -> right */
							    $('#menu > li').animate({backgroundPosition:"(-981px 0)"},0).removeClass('bg1 bg2 bg3').addClass(item);
							    move(1,item);
						    }
						    else{
							    /* if we hover the first <li> or if we come from the last one, then the images should move right -> left */
							    $('#menu > li').animate({backgroundPosition:"(981px 0)"},0).removeClass('bg1 bg2 bg3').addClass(item);
							    move(0,item);
						    }

						    /*
						    We want that if we go from the first one to the last one (without hovering the middle one),
						    or from the last one to the first one, the middle menu's overlay should also slide, either
						    from left to right or right to left.
						     */
						    if(current == 2 && item == 'bg1'){
							    $('#menu .sub'+parseInt(current)).stop().animate({backgroundPosition:"(-327px 0)"},300);
						    }
						    if(current == 0 && item == 'bg3'){
							    $('#menu .sub'+parseInt(current+2)).stop().animate({backgroundPosition:"(327px 0)"},300);
						    }
						    
						    /* change the current element */
						    current = $this.parent().index();
						    
						    /* let's make the overlay of the current one appear */
					       
						    $('#menu .sub'+parseInt(current+1)).stop().animate({backgroundPosition:"(0 0)"},300,function(){
							    $(this).find('li').fadeIn();
						    });
					    });
				    //}	
			    //}).attr('src', 'images/'+i+'.jpg');
		    
					    
    /*
    dir:1 - move left->right
    dir:0 - move right->left
     */
    function move(dir,item){
	if(dir){
	    $('#bg1').parent().stop().animate({backgroundPosition:"(0 0)"},200);
	    $('#bg2').parent().stop().animate({backgroundPosition:"(-327px 0)"},300);
	    $('#bg3').parent().stop().animate({backgroundPosition:"(-654px 0)"},400,function(){
		$('#menuWrapper').removeClass('bg1 bg2 bg3').addClass(item);
	    });
	}
	else{
	    $('#bg1').parent().stop().animate({backgroundPosition:"(0 0)"},400,function(){
		$('#menuWrapper').removeClass('bg1 bg2 bg3').addClass(item);
	    });
	    $('#bg2').parent().stop().animate({backgroundPosition:"(-327px 0)"},300);
	    $('#bg3').parent().stop().animate({backgroundPosition:"(-654px 0)"},200);
	}
    }
	/* Hide panels when not hovering over links */
	
	$('#menuWrapper').hover(function() {
		$('#menuWrapper ul li ul').show();
			} , function() {
		$('#menuWrapper ul li ul').fadeOut(); //Hide the subnav
	});

});