function popContent(filename,widthParam,heightParam) {
		
		var SHeight, SWidth;
		var boxWidth, boxHeight, boxLeft, boxTop;
		sHeight = screen.height;
		sWidth = screen.width
		boxHeight = heightParam;
		boxWidth = widthParam;
		boxLeft = (screen.width - boxWidth) / 2;
		boxTop = (screen.height - boxHeight) / 2;
	
		window.open(filename,"_blank","location=no,toolbar=no,width=" + widthParam + ",height=" + heightParam + ",directories=no,status=no,scrollbars=yes,resizable=no,menubar=no,screenx=" + sWidth + ",screeny=" + sHeight + ", top=" + boxTop + ",left=" + boxLeft);   
}