var reset_div = function()
{
	$('#download_result').hide();
};
var float_div = function()
{
 	$('#download_result').show();
};

$(window).scroll(function()
{
	if ($(window).scrollTop() == 0) {
		$('#download_result').css({'position':'relative', 'width':'458px', 'left':'50%', 'margin-left':'-229px', 'z-index':'50'});
	} else {
		$('#download_result').css({'position':'absolute', 'width':'458px', 'left':'50%', 'margin-left':'-229px', 'z-index':'100'});
	}
	$('#download_result').animate({top:$(window).scrollTop()+"px" },{queue: false, duration: 350});
});