document.observe("dom:loaded", function() {

	var cnt_all_ajax = 0;

	Ajax.Responders.register({
		onLoading: function() {
			cnt_all_ajax++;
			if (cnt_all_ajax && $('cnt_all_ajax_div')) $('cnt_all_ajax_div').show();
		}, 
		onComplete: function(){
			cnt_all_ajax--;
			if (!cnt_all_ajax && $('cnt_all_ajax_div')) $('cnt_all_ajax_div').hide();
		}
	});
});