$(document).ready(function() {
	slider();
});

function slider(){
	$("div.cont").slideUp(0);
	
	$("div.read").click(function () {
		var btn = $(this);
		if(btn.prev("div.cont").is(":hidden")){
			btn.prev("div.cont").slideDown(300, function(){btn.css("background-position","bottom");});
		}else{
			btn.prev("div.cont").slideUp(300, function(){btn.css("background-position","top");});
		}
	});
}