Creating a horizontal nav bar easily in a header - html

Question

I have a certain Header with my Logo and title. Just to the right of the Title Mobility group I want to create a nav bar that touches the bottom of the header with different tabs all the way to the right of the header. Messing around I was able to create something, but I can't seem to position it correctly.
http://jsfiddle.net/jHJK2/
http://jsfiddle.net/jHJK2/embedded/result/
I just can't figure out how to add this navigation bar to my header div.
HTML code:
<div id="page">
<div id="header">
<a href="http://wireless.fm.intel.com/test/index.php">
<img src="http://wireless.fm.intel.com/test/logo2.png" border=0 >
</a>
<h2><a href="http://moss.ger.ith.intel.com/sites/MWG-IS/Pages/Default.aspx" border=0>Mobility Group</a></h2>
<div id="navigation">
About
Reports
Documents
Checklists
License Tools
Presentations
Software Releases
</div>
</div>
<div id="main"></div>
<div id="footer"></div>
</div>
CSS Code:
html, body {
padding:0;
margin:0;
height:100%;
}
#page {
min-height:100%;
position:relative;
height:100%;
}
#header {
background-color:#115EA2;
height:100px;
width:97.5;
}
#main {
width:1300px;
margin-left:auto;
margin-right:auto;
background-color:#F1F2F3;
min-height:90%;
height:auto;
height:89%;
margin:0 auto -50px;
vertical-align:bottom;
}
#footer {
position:fixed;
width:100%;
bottom:0;
height:35px;
background-color: #115EA2;
}
#header img {
float:left;
display:inline;
}
#header h2 {
text-align:center;
font-size:44px;
color:#FFFFFF;
left:0px;
top:20px;
font-weight:bold;
font-family: Sans-serif;
float:left;
margin-top:20px;
margin-left:20px;
text-decoration:none;
}
#header h2, a, a:visited, a:hover, a:active {
color: #FFFFFF;
text-decoration: none;
}
Navigation Bar Code:
#navigation {
position:relative;
top:0;
left:0;
right:0;
bottom:0;
width:70%;
background-color:gray;
color:green;
height:35px;
text-align:center;
padding-top:15px;
}
#navigation a {
font-size:14px;
padding-left:15px;
padding-right:15px;
color:black;
text-decoration:none;
}
#navigation a:hover {
color:blue;
}
Update
Just wanted to say Thank you all for your help.

Answer 1

Adapting your current method to a more html5 approach, you can use header and nav tags do better markup your document. Absolute positioning also gives you better control over your elements. You would set the header to a relative position, and the nav to absolute, and offset it by the height of your header.
nav {
position: absolute;
top: 100px;
left: 0;
right: 0;
bottom: 0;
min-width: 800px;
text-align: left;
height: 20px;
padding: 10px 20px;
}
Here is your updated fiddle
And here is an update with the nav to the right, a bit messy though:
http://jsfiddle.net/jHJK2/5/

Answer 2

Not 100% sure if this is how you want it since your request wasn't very clear, but here's what I made.
http://jsfiddle.net/jHJK2/2/
Changes:
HTML:
<div id="header">
<div id="navigation"> //moved this before the other elements
About
Reports
Documents
Checklists
License Tools
Presentations
Software Releases
</div>
<a href="http://wireless.fm.intel.com/test/index.php">
<img src="http://wireless.fm.intel.com/test/logo2.png" border=0>
</a>
<h2><a href="http://moss.ger.ith.intel.com/sites/MWG-IS/Pages/Default.aspx" border=0>Mobility Group</a></h2>
</div>
CSS:
#navigation {
width:100%;
background-color:gray;
color:green;
height:35px;
text-align:center;
padding-top:15px;
}
#navigation a {
font-size:14px;
padding-left:15px;
padding-right:15px;
color:black;
text-decoration:none;
}
#navigation a:hover {
color:blue;
}

Answer 3

Make the following CSS changes:
Demo in jsFiddle
#header {
background-color:#115EA2;
height:100px;
width:97.5;
position: relative;
}
#navigation {
position:absolute;
/* top:0;
left:0;*/
right:0;
bottom:0;
width:70%;
background-color:gray;
color:green;
height:35px;
text-align:center;
padding-top:15px;
}