function popup(element, width, height)
		{
			url = element.getAttribute ? element.getAttribute('href') : element;

			width = Math.min(screen.availWidth, width);
			height = Math.min(screen.availHeight, height);

			pos_x = Math.round((screen.availWidth - width) / 2);
			pos_y = Math.round((screen.availHeight - height) / 2);

			return window.open(url, '_blank', 'width=' + width + ', height=' + height + ', left=' + pos_x + ', top=' + pos_y + ', resizable=0, scrollbars=0');
		}