function popUp(winTitle, winPage, winHeight, winWidth, userID)
{	var winLeft = (screen.width - winWidth) / 2 ;
	var winTop = (screen.height - winHeight) / 2 ;

	popupWin = window.open(winPage, null, "width=" + winWidth + ",height=" + winHeight + ",left=" + winLeft + ",top=" + winTop + ",copyHistory=no,dependent=yes,directories=no,location=no,menubar=no,resizable=no,scrollbars=no,status=no,toolbar=no");
	popupWin.Title = winTitle;	
	popupWin.focus();		
}