function popup(url,inputId,width,height) {
  var scrheight=screen.availHeight;
  var scrwidth=screen.availWidth;
  var winheight=height;
  var winwidth=width;
  var leftpos= (scrwidth/2)-(winwidth/2);
  var toppos = (scrheight/2)-(winheight/2);
  window.open(url,inputId
		, "height=" + winheight
		+ ",width=" + winwidth
		+ ",left=" + leftpos
		+ ",top=" + toppos).focus();
}