You can do it with CSS.
Find your /includes/templates/templatefolder/css/stylesheet.css
Copy it and paste it one level up as your backup.
Search for the "#navCatTabs ul li a" class, no parenthesis.
It will be nested and look something like this.
Code:
#navMain ul li a, #navSupp ul li a, #navCatTabs ul li a {
text-decoration: none;
padding: 0em 0.5em;
margin: 0;
color: #ffffff;
}
Cut #navCatTabs ul li a and paste it one line below the }
Now you want to add some CSS buttons to the mix. Do you have the button image made? I'm going to call it "button.jpg"
Add the following to your code and never use the tab button to move the cursor in place. Space bar will get you there.
Code:
#navCatTabs ul li a {
background-image: button.jpg
}
You may want to add a hover to that, which is the same image with a border, or a differant cover. A third version of the same image can be used if you want a visited link.
Just google css tutorials and you'll find more about it.