I've tried using the google api and my own jQuery.js file, and I'm checked it through a lot and my javascript code seems to be good, so I'm guessing it's something obvious between linking jQuery to the web page that I'm missing
<!DOCTYPE html>
<html>
<head>
<title>COMPUTERS.</title>
<link rel="stylesheet" type="text/css" href="cstyle.css">
<script type="text/javascript" src="cscript.js"></script>
</head>
<body>
<div id="navhead" align="center">
<div id="navleft" class="nav">
<p class="valign">Copyright and Patents</p>
</div>
<div id="navcentre" class="nav" align="center">
<p class="valign">Computer Misuse</p>
</div>
<div id="navright" class="nav">
<p class="valign">Data Protection</p>
</div>
</div>
</body>
</html>
Javascript:
$(document).ready(function(){
$(".nav").mouseenter(function(){
$(this).fadeTo("slow", 1);
});
$(".nav").mouseleave(function(){
$(this).fadeTo("slow", 0.5);
});
});