jQuery(function(){

	var sizeElementY = $("#footer").offset().top;

	$(window).scroll(function(){
		var sizeScreenY = $(window).scrollTop()+$(window).height();
//alert(sizeElementY+":"+sizeScreenY);
		if(sizeScreenY >= sizeElementY){
			$("#bookmark").fadeIn("slow");
		}
		else{
			$("#bookmark").fadeOut("slow");
		}
	});

});