<ul> Image in menu

Hi,
in template restaurant I want to restore the default img of the <ol> items in the menu at link position.
(see img attached)
How can I do that? Do I have to set a special "class" in the menu options?
Thanks

I forgot to tell you that I'm working with Joomla 3.1
Regards

<ol> has numbers that is <ul>

you can set list style by adding at bottom of template_css.css:

UL{
list-style:disc;
}

check all values of list-style www.w3schools.com/cssref/pr_list-style-type.asp

I know about the circle, thanks.
I want to put the img with fork and knife instead the circle.
Where do I find/set this parameter?
Thanks

Code for that image was originally in template_css.css around line 405:

.column_right ul.menu li:hover,.column_left ul.menu li:hover {
background:url(../images/mainmenu_icon_h.png) no-repeat;
}

Also you need to set :

UL{
list-style:none;
}

because fork image is actually background of list item itself