textarea onclick help

[MDanz]

onclick of the textarea, it should display the div with "TEST" in it but nothing happens.

<script type="text/javascript">
function popup(number) {
document.getElementById('submit'+number).style.display == "block";
document.getElementById('submit'+number).style.position == "absolute";


}
</script>

<?php

echo "<textarea id='example0' readonly='readonly' onclick='popup(0)'></textarea>";

echo "<div id='submit0' style='display:none'>TEST</div>";
?>