Show Hide Functionality(Javascript)

Test page : http://jsfiddle.net/r3SQd/

<input id="button1" type="button" value="show/hide" />
<div id="elementInside">
    HERE ALL YOUR ELEMENT TO SHOW/HIDE
</div>

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<script>
window.onload = function() {
    document.getElementById("button1").onclick = function() {
        var els = document.getElementById("elementInside");
        if( els.style.display == "none") {
            els.style.display = "block";
        }
        else {
            els.style.display = "none";
        }
    }
}
</script>

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another one : http://jsfiddle.net/r3SQd/1/

<input id="button1" type="button" value="hide" />
<div id="elementInside">
    HERE ALL YOUR ELEMENT TO SHOW/HIDE
</div>

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<script>
window.onload = function() {
    document.getElementById("button1").onclick = function() {
        var els = document.getElementById("elementInside");
        if( els.style.display == "none") {
            els.style.display = "block";
            this.value = "hide";
        }
        else {
            els.style.display = "none";
            this.value = "show";
        }
    }
}
</script>

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yes, you can put an onclick function on the button or any other element that you want to use and then the easiest way is for the javascript to manipulate the css.
So then you do something like this
document.getElementById('idofelementtohid').style.display="none";
You can do this with any css style property.

with jQuery : http://jsfiddle.net/r3SQd/8/

<a href="javascript:void(0)" id="button1" >hide</a>
<div id="elementInside">
    HERE ALL YOUR ELEMENT TO SHOW/HIDE
</div>

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<script src="http://code.jquery.com/jquery-1.6.2.js"></script>
<script>
$(document).ready(function() {
    $("#button1").click(function() {
        $("#elementInside").toggle();
        $(this).html( $("#elementInside").is(":visible")?"hide":"show" );
    })
})
</script>

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here is another simple sample using jQuery

<script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript" ></script>

<script>
function btnClick(){
  $("#divTest").toggle();
}
</script>

<div id=divTest style="width:200;border:1px solid gray">HainKurt</div>
<button onClick="btnClick()">Toggle div</button>

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