Server Side Event Is Not Firing With jQuery

<script type="text/javascript">
$(document).ready( function(){
	$('.addProduct').each(function(){
		var img = $("#ctl00_ContentPlaceHolder1_imgProduct");
		$(this).click(function(){
			flyToElement($(img), $('#ctl00_lbtnMyCart'));
		    return false;
		});

	});
	$('.removeProduct').each(function(){
		var img = $(this).closest('li').find('img:first');
		$(this).click(function(){
			flyFromElement($(img), $('#basket'));
			return false;
		});
	});
});

function flyToElement(flyer, flyingTo, callBack /*callback is optional*/) {
	var $func = $(this);

	var divider = 3;

	var flyerClone = $(flyer).clone();
	$(flyerClone).css({
		position: 'absolute',
		top: $(flyer).offset().top + "px",
		left: $(flyer).offset().left + "px",
		opacity: 1,
		'z-index': 1000
	});
	$('body').append($(flyerClone));

	var gotoX = $(flyingTo).offset().left + ($(flyingTo).width() / 2) - ($(flyer).width()/divider)/2;
	var gotoY = $(flyingTo).offset().top + ($(flyingTo).height() / 2) - ($(flyer).height()/divider)/2;

	$(flyerClone).animate({
		opacity: 0.4,
		left: gotoX,
		top: gotoY,
		width: $(flyer).width()/divider,
		height: $(flyer).height()/divider
	}, 700,
		function () {
			$(flyingTo).fadeOut('fast', function () {
				$(flyingTo).fadeIn('fast', function () {
					$(flyerClone).fadeOut('fast', function () {
						$(flyerClone).remove();
						if( callBack != null ) {
							callBack.apply($func);
						}
					});
				});
			});
		});
}

function flyFromElement(flyer, flyingTo, callBack /*callback is optional*/) {
	var $func = $(this);

	var divider = 3;

	var beginAtX = $(flyingTo).offset().left + ($(flyingTo).width() / 2) - ($(flyer).width()/divider)/2;
	var beginAtY = $(flyingTo).offset().top + ($(flyingTo).width() / 2) - ($(flyer).height()/divider)/2;

	var gotoX = $(flyer).offset().left;
	var gotoY = $(flyer).offset().top;

	var flyerClone = $(flyer).clone();

	$(flyerClone).css({
		position: 'absolute',
		top: beginAtY + "px",
		left: beginAtX + "px",
		opacity: 0.4,
		'z-index': 1000,
		width:$(flyer).width()/divider,
		height:$(flyer).height()/divider
	});
	$('body').append($(flyerClone));

	$(flyerClone).animate({
		opacity: 1,
		left: gotoX,
		top: gotoY,
		width: $(flyer).width(),
		height: $(flyer).height()
	}, 700,
		function () {
			$(flyerClone).remove();
			$(flyer).fadeOut('fast', function () {
				$(flyer).fadeIn('fast', function () {
					if (callBack != null) {
						callBack.apply($func);
					}
				});
			});
		});
}
		</script>

<a href="#" class="addProduct">
    <asp:ImageButton ID="ibtnAddToCart" runat="server" OnClick="ibtnAddToCart_Click"
        ImageUrl="~/images/add-to-cart.gif"  /></a>

protected void ibtnAddToCart_Click(object sender, ImageClickEventArgs e)
{
     this.addCart();
}