Another simple question

[rubric]

How do I force a refresh on a browser? Sometimes I change a few images but leave the names the same and the browser ignores what I have and uses the pictures in its cache. How can I make sure that the browser re-downloads the pictures?

[planetsim]

Theres two ways theres use of header();

or

meta

i prefer the use of meta

so like this

<META HTTP-EQUIV="expires" CONTENT="0">
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache">

you may choose one or all they pretty much do the job

Read more about meta here http://webmasterbase.com/article/31

and at http://w3schools.com