function wk_increment(art_id,verfuegbar){
		$('#wk_counter_num_' + art_id).html('<center><img src="images/wk_loader.gif"></center>');
		$('#wk_counter_button_'+art_id).css('display','none');
		window.setTimeout(function(){
			$.ajax({
				type: 'POST',
				url: 'wk_increment.php',
				data: "art_id=" + art_id + "&av=" + verfuegbar,
				success: function(returnData){
					$('#wk_counter_num_' + art_id).html(returnData);
					/** Warenkorb QuickInfo update **/
					$('#warenkorb_sidebar').load('sidebar_shop_update.php');
					$('#wk_counter_button_'+art_id).css('display','block');
				}
			});
		},500);
	}