$(document).ready(function(){
	
	$('li.bottone_menu').hover(
		function(){
			var left = $('ul', this).parent().position().left;
			//~ alert(left);
			var top = $('ul', this).parent().position().top;
			//~ alert(top);
			$('ul', this).css({"display":"block", "left": (left + 100) + "px", "top": (top - 145) + "px"}).animate({"opacity": 1}, "3000");
		}, function(){
			$('ul', this).css({"display":"none", "opacity": 0});
		}
	);
});