You can clone with
HTTPS or Subversion.
Under the following circumstance, this script results in pop-ups with superfluous horizontal scroll bars: when there's an element with a pre-defined width, determining the pop-up width, that's tall enough to cause the pop-up to vertically scroll. This seems to be a result of the script failing to calculate the total width of the pop-up's content correctly with the addition the vertical scroll bar
This is causing me a headache too.