function FindCertyficates()
{
	
	var filter = $('#courses_filter').attr('value');
	var filter_group = $('#courses_filter_group').attr('value');
	var category = $('#category_name').attr('value');
	
	if(filter != window.filter)
	{
		window.filter = filter;		
		
		
		
		//dodanie ikonki
		$('#course_loading').show();
		
		//ladowanie post
		$.post('/index.php/certyficate/ajax_certyficates',{'category': category, 'filter':filter, 'filter_group': filter_group},function(data)
				{
					$('#course_list_center').html(data);
					$('#course_loading').hide();
					//usuniecie ikonki
				});
		
		
		
	
		
		
	}	
	
			
}