How do I hide old div when opening a new one?

[bate145185]

If you go to my site www.bonkage.com notice that if clicking image/video editing doesn't work unless you first click Web site First, and then theres no going back.

So i think I somehow need to make it some click each link closes out all of the others at the same time. It Seemed simple but I was wrong = /


Here is all the code involved. . .


The HTML code for the buttons:

<div id="RightNotes">
<div id="WebDesign" a class="WebDesign" a onclick="document.getElementById('BlogWebDesign').style.display='block'" "document.getElementById('Blog').style.display='close'" ><a>
</div>
<div id="ImageVideoEditing" a class="ImageVideoEditing" a onclick="document.getElementById('BlogImageVideoEditing').style.display='block'"></a>

The CSS code for the buttons:

#WebDesign
	{
		width: 200px;
		height: 92px;
		position:relative;
		top:-860px;
		left:365px;
		z-index:6
	}

	.WebDesign {
		display: block;
		width: 116px;
		height: 92px;
		background: url('../images/RightNav/WebDesign.png') top;
		text-indent: -99999px;
	}
	.WebDesign:hover {
		background-position: bottom;
	}

#ImageVideoEditing
	{
		width: 200px;
		height: 92px;
		position:relative;
		top:-710px;
		left:365px;
		z-index:6
	}

	.ImageVideoEditing {
		display: block;
		width: 190px;
		height: 92px;
		background: url('../images/RightNav/ImageVideoEditing.png') top;
		text-indent: -99999px;
	}
	.ImageVideoEditing:hover {
		background-position: bottom;

</div>[/HTML]

The HTML code for where the content is loaded:

<div id="BlogWebDesign"><div class="close">
</div>
<div id="BlogImageVideoEditing"><div class="close">
</div>

The CSS code for where the content is loaded:

#BlogWebDesign
	{
		display: block;
		width: 690px;
		height: 864px;
		background: url('../images/Body/WebServices.png') top;
		position:relative;
		top:-1945px;
		right:113px;
		display: none;
		.blog display:none;
		z-index:3
	
		}


#BlogImageVideoEditing
	{
		display: block;
		width: 690px;
		height: 864px;
		background: url('../images/Body/ImageVideoEditing.png') top;
		position:relative;
		display: none;
		.blog display:none;
		z-index:3

		}

Any Advice would be greatly appreciated,



Thanks

Chris