function winOpen (htmldoc,windowname, width, height, left, top) {
	if (!width) {
		width = 640;
	}
	if (!height) {
		height = 700;
	}
	if (!left) {
		left = 150;
	}
	if (!top) {
		top = 10;
	}
	var size = "width=" + width + ",height=" + height + ",left=" + left + ",top=" + top;
	var popup=open(htmldoc,windowname,"toolbar=no,scrollbars=yes,directories=no,status=no,resizeable=yes,copyhistory=no,menubar=no," + size);
  popup.focus();
}