Changing php variable with javascript ... possible?

[jtown]

I have this javascript that I'm using, but I want it to change a php variable. The js is below:

<a onmouseover="onmenu()"; onmouseout="offmenu()"; class="menu" onClick="pic.src='%s';">

I have no idea how to do this.

[keyurjbhatt]

use php tag where u want to use that variable
like
<? $k=11 ?>

<script ....>
....

<A ....... onclick="pic.src=<? echo "$k" ?>">