$(document).ready(function(){

	$(".accordion").click(function() {
								 
		if($(this).next(".slider").is(":hidden")) {
			$(this).next(".slider").slideDown();
			$(this).css("background", "url('../pixel/bg_accordion_down.gif') center left no-repeat");
		} else {
			$(this).next(".slider").slideUp();
			$(this).css("background", "url('../pixel/bg_accordion_right.gif') center left no-repeat");
		};
	});
});