$(document).ready(function(){

	$(".music_player_btn").click(function(){
		if ($("#openCloseIdentifier").is(":hidden")) {
			$("#music_player .widget").animate({ marginTop: "0px" }, 500 );
			$("#openCloseIdentifier").show();
		} else {
			$("#music_player .widget").animate({ marginTop: "160px" }, 500 );
			$("#openCloseIdentifier").hide();
		}
		
		$(this).toggleClass("active"); return false;
	});

});