I can't seem to get this plugin working on multiple themes I have that all share the same search form style:
<form id="searchform" action="<?php echo get_option('home') ?>" />
<input type="text" name="s" value="Search..." onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;" />
<input type="image" src="searchbutton.gif" />
It will however work on other pages that have the default search field that I haven't edited. But on pages with the custom search, the suggestions area doesn't display as if it's not working at all there.