function showpicture(file, caption, width, height) {
	if(width<200) {
		width=200;
		}
	if(height<200) {
		height=200;
		}
	width=30+width;
	height=30+height;
	//alert("width="+0+width+30+", height="+0+height+30+",");
	window.open(file, "_blank", "width="+width+", height="+height+", resizable=yes, directories=no, location=no, menubar=no, scrollbars=no, status=no, titlebar=no, toolbar=no");
	}