function HTML_popupWindow(url, target, width, height){
	var features;
	features = 'location=0,menubar=0,scrollbars,resizable,dependent,status=0,toolbar=0,width=' + width + ',innerWidth=' + width + ',height=' + height + ',innerHeight=' + height;
	if (window.screen) {
		var ah = screen.availHeight - 30;
		var aw = screen.availWidth - 10;

		var xc = (aw - width) / 2;
		var yc = (ah - height) / 2;

		features += ",left=" + xc + ",screenX=" + xc;
		features += ",top=" + yc + ",screenY=" + yc;
	}
	var wnd = window.open(url, target, features);
	wnd.focus();
}