In a monitoring app I have written, the message summary screen
refreshes itself automatically every couple of minutes via the
line <meta http-equiv="Refresh" content="180">.
The screen mostly comprises a table of single-line messages,
and next to each a small status image (red for error, yellow
for warning, etc).
Normally in Internet Explorer these images display fine. But
occasionally, after a refresh, the "missing image" cross and
image title are displayed instead.
This usually happens only with the image displayed (or supposed
to be) most often on the page, typically the green OK button.
Can anyone suggest what causes this problem, and more importantly
how I can eliminate it?
(I suspect the problem is caused by a timeout, in that if IE doesn't
receive a requested image within a certain time then it just assumes
the image is not available. If so, is there any way to increase its
timeout interval, or to ensure the images are kept in IE's cache
across page refreshes?)
Thanks in anticipation.
Cheers
John R Ramsden (jo**********@sagitta-ps.com)