function popUp(URL)
{
	var w = 480;
	var h = 340;

	if (document.all) {
		/* the following is only available after onLoad */
		w = document.body.clientWidth;
		h = document.body.clientHeight;
	}
	else if (document.layers) {
		w = window.innerWidth;
		h = window.innerHeight;
	}

	var popW = 480;
	var popH = 440;

	var leftPos = (w - popW) / 2;
	var topPos  = (h - popH) / 2;

	// window.open
	// window.showModalDialog(URL, 'popup',
	window.open(URL, 'popup',
				'toolbar=0, scrollbars=1, location=0, statusbar=0, menubar=0, resizable=0,' +
				'width=' + popW + 
				', height=' + popH + 
				', top=' + topPos + 
				', left=' + leftPos );

	// window.open(URL, 'popWin', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=' + width + ',height=' + height);
}

function Cancel()
{
	window.close() ;
}