I remember looking this up long ago and not finding anything very helpful with it... so here I am with this mssg.
There is an example on
this page of why I am asking this question. If you look to the bottom, you will see the 24hr grid of gold's price. It is current, but if you sit there for five minutes it does not change, whereas the content will be updated if you reload the page. Is there a way to create a server-side reload (like every minute or two) to update the img? I know it might take an iframe to get that to work so not everything reloads... but I want to see if that is possible.
And if this can work, would it require PHP?
Thanks!