function menuDeroulant(){
	$(".menu li").hover(
		function(){$(this).find("ul:first").css({visibility: "visible",display: "none"}).show(400);},
		function(){$(this).find("ul:first").css({visibility: "hidden"});}
	);
}

function equalHeight(group) {
	tallest = 0;
	group.each(function() {
		thisHeight = $(this).height();
		if(thisHeight > tallest) {
			tallest = thisHeight;
		}
	});
	group.height(tallest);
}


$(document).ready(function(){
	menuDeroulant();
	$(document).pngFix(); 
	equalHeight($(".cols"));

});