function openwindowf(scr, w_width, w_height) {
	w_width = w_width + 40;
	w_height = w_height + 40;
	bildfenster = window.open(scr,"bild","width=" + w_width + ",height=" + w_height + ",top=10,left=10,scrollbars=yes,resizable=yes,topmargin=0,leftmargin=0");
	bildfenster.focus();
}