высота div с помощью php javascript

 

if (!isset($_POST['screen'])) {

    ?>

 

    <form action="" method="post">

    <script language="javascript">

    document.write ('<input name="screen" type="hidden" value=" '+screen.width+' "></form>');

    document.forms[0].submit();

    </script>

 

 

 

if (isset($_POST['screen'])) {

$n = $_POST['screen'];

if

($n >= 1500){

else if

($n >= 1000 and $n <= 1500){

else if

($n <= 1000){

else

?>

#header {

height: <?echo $header_height;?>;

}