js hide div
// javascript
<script>
document.getElementById("id").style.display = "none"; //hide
document.getElementById("id").style.display = "block"; //show
document.getElementById("id").style.display = ""; //show
</script>
// html
<html>
<div id="id" style="display:none">
<div id="id" style="display:block">
</html>
// jquery
<script>
$("#id").hide();
$("#id").show();
</script>
<script type="text/javascript">
<!--
function toggle_visibility(id) {
var e = document.getElementById(id);
if(e.style.display == 'block')
e.style.display = 'none';
else
e.style.display = 'block';
}
//-->
</script>
<!-- Inline Usage in HTML -->
<a href="#" onclick="toggle_visibility('foo');">Click here to toggle visibility of element #foo</a>
<div id="foo">This is foo</div>