While I don't know the answer, I would take this opportunity to use this as leverage to force them to upgrade their systems. At this point in time, even some Windows 10 versions are unsupported by Microsoft, which means XP, 7, and 8 are all completely unsupported. Too many unpatched vulnerabilities and if there's one old piece of software that won't run on anything newer, suggest they start looking for alternatives, or move your systems running perspective to a different machine.
Sometimes the amount of time you'll spend trying to fix something that just can't be fixed is more expensive than just upgrading the system and moving on.
yea, I need to use a certain version of Firefox for running on the XP server, Few issues around tables and the other bar chart which i managed to find fixes for, just can't seem to get the time to display correctly