<!DOCTYPE html>
<html>
<body>
<input type=search value=q style="visibility:hidden"> <br>
<input type=search value=q style="display:none"> <br>
<input type=search value=q style="opacity:0"> <br>
<input type=search value=q id=s>
<script>
document.getElementById('s').style.visibility = 'hidden';
</script>
</body>
</html>