function popUp()
{
	if (self.innerHeight) {
			x = self.innerWidth;
			y = self.innerHeight;
			// IE 6 Strict Mode
			} else if (document.documentElement && document.documentElement.clientHeight) {
			x = document.documentElement.clientWidth;
			y = document.documentElement.clientHeight;
			// Остальные версии IE
			} else if (document.body) {
			x = document.body.clientWidth;
			y = document.body.clientHeight;
		}
		var top = document.body.scrollTop;
		var left = document.body.scrollLeft;

		var width = $("#pop_up").width();
		var height = $("#pop_up").height();

		var halfX = x /2;
		var halfWidth = width / 2;
		var leftPad = (left + halfX) - halfWidth;

		var halfY = y /2;
		var halfHeight = height / 2;
		var topPad = (top + halfY) - halfHeight;

		$("#pop_up").css('marginTop', topPad);
		$("#pop_up").css('marginLeft', leftPad);

		$("#content").fadeTo("slow", 0.5);
		$("#pop_up").fadeIn('slow');
}
function closePopUp()
{
	$("#content").fadeTo("normal", 0);
	$("#pop_up").css('display', 'none');
}