var imagepath, image_popup;
function enlarge(image) {
	if (image_popup && !image_popup.closed) image_popup.close();
	imagepath = 'images/'+image;
	var left = Math.round((screen.availWidth-100)/2);
	var top = Math.round((screen.availHeight-100)/2);
	image_popup = window.open('image_popup.html', 'bircher', 'width=100,height=100,top='+top+',left='+left+',location=no,menubar=no,status=no,toolbar=no,resizable=yes');
}