My CSS dropdown menu works perfectly in Mozilla, Chrome, and Safari. However, it's a bit finicky in IE10 (still works) and doesn't work at all in IE9.
I've tried to troubleshoot the issue, as there are websites with CSS dropdown menus that function smoothly in IE.
You can view the code here: http://jsfiddle.net/xZuDC/
The images show:
Normal Menu in Chrome
Menu in IE
List:
<ul class="ulrRight">
<li><a onclick="your_name">Your Account</a>
<ul id="your_name">
<li><a href="/index.php?f=mydetails">Details</a></li>
<li><a href="/index.php?f=mypassword">Password</a></li>
</ul>
</li>
</ul>