Tips
Yes, the search function can be disabled and the left navigational panel can still be shown.
1. Under 'Category' select 'Edit Category'
2. Choose the |Product Search| category
3. In the 'Script for this Category' form field remove the following script:
<form action="http://www.mysite.com/products/search.cfm" method="post"><br /><input name=searchquery type=text size=12><br><input type=submit value="Product Search" style="width: 120px;"></form>