I've modified the basic skin but I have run into a problem with the dropdown menus and z-index. I have 2 blocks at the top of the page both using Dropdown Horizontal as the template. Problem is that the drop down for the upper menu overlaps the lower menu and the result is not pretty.
You can see the problem on this development site – http://www.omnivos.com/cscart3/
Click on white papers at the top of the page. I'm fairly certain the problem can be resolved in dropdown.css but I've not been able to find it. Any help is appreciated.
Please follow the path skins/basic/customer/styles.css
and in styles.css file create the rule
Best regards, Alt-team