How to add CODE block to Blogger post

If you want to add some code snippet to your post on Blogger just copy code snippet you need and go to this site http://www.simplebits.com. It has tools that will configure your snippet  (it will change some signs).

How to hide and show div block with Javascript

1. Javascript
Add to the header the script that will hide/show div you need

<script language="JavaScript">
    function toggle(id) {
        var state = document.getElementById(id).style.display;
            if (state == 'block') {
                document.getElementById(id).style.display = 'none';
            } else {
                document.getElementById(id).style.display = 'block';
            }
        }
</script>

2. CSS
In order to hide your div at the beginning add this to your CSS style:

#div1 {
        display:none;
}

HTML
In your HTML add hyperlink that will trigger the script for the id with the specific name:

<a href="#" onclick="toggle('div1');">Your text is here</a>

<div id="div1">
The content of this div will be hidden or shown after click on the link above.
</div>