Hi all,

First of aal sorry for my ignorance, but i just started with javascript.
I made small function with that hides or shos a div. In addition to that i made a small button that class that function.

Maybe someone could take a look at it and point me in the right direction:
this i put in my <head> </head>
Code:
<script type="text/javascript">
            function hide_me(haha){
                var el = document.getElementById(haha)
                if (el.style.display != 'none'){
                    el.style.display = 'none';
                }else{
                    el.style.display = '';
                }
            }
</script>
and in the body i have this
Code:
<div id="haha">
      <p>moehaha i am invisible</p>
</div>
    <input type="submit" onclick="hide_me(haha)" value="press me" />