var name = "#nz_ukazovatel_ceny";

$(document).ready(function(){	
	$(window).scroll(function () {
		var stop = $(document).scrollTop();
		var limit = parseInt($("#box_top").css("height").substring(0,$("#box_top").css("height").indexOf("px")))
			+ parseInt($("#box_hlavicka").css("height").substring(0,$("#box_hlavicka").css("height").indexOf("px")));
		if(stop < limit - 10){
			var offset = limit + "px";}
		else{
			var offset = stop + "px";
				}
		$(name).animate({top:offset},{duration: 0,queue: false});
	});
});