var name = "#menu_rect1";
var menuYloc = null;
$(function(){
	menuYloc = 173;
	//menuYloc = parseInt($(name).css("top").substring(0,$(name).css("top").indexOf("px")));
	$(window).scroll(function () { 
		offset = menuYloc+$(document).scrollTop()+"px";
		$(name).animate({top:offset},{
			duration:350,
			queue: false
		});
	});
});