I have put
<meta http-equiv="Refresh" content="120"><!-- Should update every 120 seconds--> <meta http-equiv="cache-control" content="no-cache"><!-- prevent caching --> <meta http-equiv="expires" content="0"><!-- prevent caching -->
in the top of my code; however, IE 8 will not load a new version of a .jpg file each time it refreshes at the end of the period.
I have picked up from this forum that
Press F12. Click Cache -> Always Refresh from Server
solves the problem for me, but restarting the browser restores the "Always Refresh from Server" status to not selected.
How do I make this selection permenant (so I do not have to select this every time I load the browser?)