Howdy,
I would recommend using an unordered list for your navigation. For example
<ul>
<li><a href="aboutus.html">About Us</a></li>
<li><a href="ourWork.html">Our Work</a></li>
<li><a href="joinNow.html">Join Now!</a></li>
<li><a href="sponsors.html">Sponsors</a></li>
<li><a href="contactUs.html">Contact Us</a></li>
</ul>
You could eliminate the need for an unecessary <div> by applying the same styles to the <ul>.
This will help keep your markup a little more manageable, and will allow you to eliminate the use of the <br> tag, which is being phased out.
Also, in regards to semantic markup...
<br>
<br>We, here at the Center, are trying to find
<br>answers to a multitude of questions, most
<br>of them that you never ever thought of.
<br>
<br>For example, we know that the cat does
<br>"miau, miau" and we call it "a mew",
<br>we know that the dog does "ham, ham"
<br>and we call it "a bark", but did you ever
<br>wonder how should we call the
<br>camel interjection?
<br>
<br>
Consider keeping your header separate from your paragraph in terms of markup. It will help search engines like google index your site, which will help in terms of search engine optimization. Those <h1>, <h2>, etc. tags are great tools...
It looks like you're using the <br> tag to keep things within the right column div... You may consider using a paragraph tag, utilizing the padding and/or margin selectors in your CSS... That way you won't have to worry about box model issues in browsers like IE5.
#right_a h1 {
text-align: center;
padding: 20px;
}
#right_a p {
text-align: center;
padding: 20px;
}
or, to save space in your style sheet, you could combine the following styles in one rule... like such.
#right_a h1, #right_a p {
text-align: center;
padding: 20px;
}
This will require a little tweaking to get it exactly like you want it, but the idea will be the same.
Then you'd rewrite your right column paragraph as such...
<div id="right_a">
<h1>Welcome to the Focology Research Center.</h1>
<p>We, here at the Center, are trying to find
answers to a multitude of questions, most
of them that you never ever thought of. </p>
<p>For example, we know that the cat does
"miau, miau" and we call it "a mew",
we know that the dog does "ham, ham"
and we call it "a bark", but did you ever
wonder how should we call the
camel interjection?</p>
<p>What are you waiting for? Find out Now!</p>
</div>
I hope this helps. Keep up the good work. And by the way, I've often wondered about the giraffe sound.... you never hear the human interpretation of that either.
Josh