Java Popup Window ain't working in php code

[eluser]jonnyG[/eluser]

Code:

<?php
if($bool == true){
echo do_alert($message);
}
?>

<?php
function do_alert($message)
    {
        echo '[removed]alert("' . $message . '"); [removed]';
    }
?>

solved it this way now..
but if the popup shows up some areas in the back are missing(looks weird)