function mainmenu(){
$(" #nav ul ").css({display: "none"}); // Opera Fix
$(" #nav li").hover(function(){
		$(this).find('ul:first').css({visibility: "visible",display: "none"}).show(200);
		},function(){
		$(this).find('ul:first').css({visibility: "hidden"});
		});
}

 
 
 $(document).ready(function(){					
	mainmenu();
	
	// Tri
	var filter;
	
	$('select.filter').change(function() {
		filter = $(this).val();
		var $form = $(this).parent();		
		$('#temporaty-filter').remove();
		
		$form.append('<input id="temporaty-filter" type="hidden" name="filter" value="'+filter+'">');
		$form.submit();
	});
	
});