function openMapWin()
{
  var xystr = window.showModalDialog('/?m=pc&a=page_o_mapform', window, "dialogWidth=800px; dialogHeight=480px;");
  var point = xystr.split(",");
  var xinput = $('mapx');
  xinput.value = point[0];
  var yinput = $("mapy");
  yinput.value = point[1];
  var xspan = $('mapx-disp');
  xspan.innerHTML = point[0];
  var yspan = $("mapy-disp");
  yspan.innerHTML = point[1];
  return false;
}