$(document).ready(function() {
			
	$('#menu div').each(function(index, element) {
		$(element)
			.css( {backgroundPosition: "0 0"} )
			.mouseover(function(){
				$(this).stop().animate({backgroundPosition:"(0 -50px)"}, {duration: 200})
			})
			.mouseout(function() {
				$(this).stop().animate({backgroundPosition:"(0 0)"}, {duration: 200, complete:function(){
					$(this).css({backgroundPosition: "0 0"})
				}})
			});	
	});
	
});

function showCredits(flag){
	if(flag) $("#credits").css("display","block");
	else $("#credits").css("display","none");
}