Main Categories on menu

Clearly you have the download? I emailed you several times to explain the issue and have not had a response from you to confirm that the download was finally in your possession.

1. do you mean replace the yellow folder with a + sign ? If so this is a change in the css style sheet for the template you are using. You will find it in the file css/layout/structure.css . You will need to replace the image yellowfolder.png with your image a +.

ul.sidebar_nav a {
display:block;
margin:0;
padding:14px 10px 6px 40px;
font-size:11px;
line-height:16px;
font-weight:bold;
background:#f1f1f2 url(../../images/layout/yellowfolder.png) no-repeat 12px center;
text-decoration:none;
}

Alternatively and perhaps with less side effects you can modify the file in modules/templatezones/accordion.tpl to not use the css selector and insert a + within the loop.

2. No - this module is not designed to show subcategories. I believe (can't remember) there may be a module on classifiiedmods.com that will do that. You would then suppress that part of the accordion menu producing the main categories from showing and use the module by placing it into your template where you wish. This is not something you will find easy to do without a fair level of skill. In fact the more I look at it the harder it is because you will need to adjust many things including the layout.tpl file.

My recommendation is you find a developer to help you with this given your comment.

By the way the site you show is totally broken in Safari and Firefox with search etc spread across the page.