function __dlg_onclose() {
	if (!document.all) {
		opener.Dialog._return(null);
	}
};

function __dlg_init() {

	if (!document.all) {
		// init dialogArguments, as IE gets it
		window.dialogArguments = opener.Dialog._arguments;
		window.sizeToContent();
		window.sizeToContent();	// for reasons beyond understanding,
					// only if we call it twice we get the
					// correct size.
		window.addEventListener("unload", __dlg_onclose, true);
		/*
		// center on parent
		var px1 = opener.screenX;
		var px2 = opener.screenX + opener.outerWidth;
		var py1 = opener.screenY;
		var py2 = opener.screenY + opener.outerHeight;
		var x = (px2 - px1 - window.outerWidth) / 2;
		var y = (py2 - py1 - window.outerHeight) / 2; */

		//centre on screen instead

		var x = (screen.width - window.outerWidth) / 2;
		var y = (screen.height - window.outerHeight) / 2;

		window.moveTo(x, y);
		var body = document.body;
		window.innerHeight = body.offsetHeight;
		window.innerWidth = body.offsetWidth;
	} else {
		var body = document.body;
		window.dialogHeight = body.offsetHeight + 50 + "px";
		window.dialogWidth = body.offsetWidth + "px";
	}
};

// closes the dialog and passes the return info upper.
function __dlg_close(val) {
	if (document.all) {	// IE
		window.returnValue = val;
	} else {
		opener.Dialog._return(val);
	}
	window.close();
};