function initPopups ()
{
	var W3CDOM = (document.getElementById && document.getElementsByTagName);
	if (!W3CDOM) return;
	var as = getElementsByClass ('popup',document,'a');
	for (var i = 0; i < as.length; i++)
	{
		if (as[i].getElementsByTagName ('img').length > 0)
		{
			as[i].onclick = function ()
			{
				var imgsrc = this.href;
				var img = new Image();
				img.src = imgsrc;
				img.onload = function ()
				{
					var dims = [img.width,img.height];
					popImage(dims,imgsrc);
				}
				return false;
			}
		}
	}
}