It's really a common template problem...
All suckerfish (or others like Supersucker, Transmenu etc.) dropdown menus should be included inside a container div to bypass such issues, mainly for compatibility with flash banners, javascript rotators which use relative positioning etc. But most template developers forget that.
So, here's what you can do.You need to add a container div that wraps your menu. Open your template's index.php file and look for the place where the menu is called. It should be something like:
<div id="nav">***menu code here***</div>
So, add a "wrapper" div, like so:
<div id="menu-container"><div id="nav">***menu code here***</div></div>
And then in your template's CSS file (template_css.css), add the following code snippet:
#menu-container {position:relative;z-index:99;}
This should fix any issues.
