PHP/Javascript - passing variables

HI! I'm trying to pass a javascript variable to PHP and it's not working! I have seen examples of where you can pass javascript variables to PHP _GET and post with URL variables. I DONT want to do that. Is there any way you can get this script to work? See below: <?php $java1 = "<script language=\"javascript\"> [login to view URL]([login to view URL])"; $java2 = ";"; $java3 = " </script>"; $screen_width= $java1 . $java2 . $java3; $screen_width1 = "$screen_width"; echo "screen_width1=" . $screen_width1; $myinteger = (integer)$screen_width1; echo "myinteger=" . $myinteger; if ($myinteger > 1369) ? ? ? ? { ? ? $BROWSER_RES="LG"; ? ? } elseif ($myinteger? > 1209) ? ? { ? ? $BROWSER_RES="MD"; ? ? } elseif ($myinteger? >= 1024) ? ? { ? ? $BROWSER_RES="SM"; ? ? }? ? ? echo "BROWSER_RES=" . $BROWSER_RES; ?>