Passing Url Vars And Popup?

This sends variables to the page okay (on a version without the onClick, opening a normal page).

Problem seems when onClick is added: where the # would normally be following the url to open the popup from colors.htm

PHP Code:

if ($row_results['Mcolor']> 2) {echo'<a href="http://www.mysite.com/colors.htm?UsrID='.$row_results['UsrID'].'" class="linebar" onClick="MM_openBrWindow('../s/shades.php','','status=yes,scrollbars=yes,width=620,height=450')">more</a>';} 

Is there always a conflict between javascript and php when sending vars since javascript is client side and php is server side? Is there another way to size the opened page, for instance, on... /shades.php itself? - Only doing the popup for this reason.

Inserted this in head of the destination page; shades.php itself, but not as a function. Might there be a way to activate this when the page loads, without onClick of a button from prior page?:

Code:
<script>
windowresize.To(400, 600);
</script>