php and javascript

I need some help passing a variable to a popup window. The following form collects input from the user and stores it in the variable $summary. <? print "<FORM action=\"hint.php\" METHOD=\"post\">"; $summary = "Hellow universe"; print "<INPUT TYPE=\"hidden\" name=\"summary\" value=\"$summary\"> "; print "<input type=\"submit\" value=\"Try This\" onClick=\"window.open('hint.php', 'remote', 'menubar,scrollbars,resizable,width=350,height=200,left=20,top=20'); return false;\">"; print "</form>"; ?> When you click on the "Try This" button, hint.php opens up in another, smaller window just like I wanted. But the variable $summary doesn't show up <? //hint.php script says this //THIS LINE PRINTS print "Here's the hint:<BR>"; //BUT NOT THIS ONE print $summary; ?> If I take JavaScript out of the submit coding, the browser window moves to hint.php and prints the $summary variable. I'm much more comfortable with PHP than JavaScript. How can I deliver the text in $summary to a second, smaller window? Thank you.