$(document).ready(function()
{
	initSlibeBlock();
});
var box;
var timer;
function initSlibeBlock()
{
	box = $(".slide-box").eq(0);
	box.initPositionTop = $(box).position().top;
	box.initPositionLeft = $(box).position().left;
	$(box).css({"position": "absolute", "top": box.initPositionTop, "left": box.initPositionLeft});
}
$(window).scroll(function()
{ 
	var _top = 0;
	if(document.documentElement.scrollTop > document.body.scrollTop)
		_top = document.documentElement.scrollTop;
	else
		_top = document.body.scrollTop;
		
	clearTimeout(timer);
	if(box.initPositionTop <= _top)
	{
		timer = setTimeout(function(){$(box).animate({"top": _top + "px"}, 300);}, 100);
	}
	else
	{
		$(box).css({"position": "absolute", "top": box.initPositionTop, "left": box.initPositionLeft});
	}
});