Hello and thanks again Mr Admin
I think I found a trick which might be usefull for those who'll be interested.
1/ I've placed a div with an image of the tabs like this :
Code:
<div id="navigation_tabs"><img src="img/nav_tabs.jpg" alt="" width="15" height="198" class="noborder"></div>
2/ in the CSS I just cover the selected li with an image (white rectangle over #2]:

This is the CSS :
Code:
#navigation_tabs {
left: -15px;
position: absolute;
margin-top: 58px;
}
.navigation {
left: -20px;
position: absolute;
margin-top: 8px;
width: 200px;
padding: 0px 0px 0px 20px;
list-style: none;
}
.navigation li {
margin-bottom: 1px ;
}
.navigation li a {
display: block;
color: #fff;
font: 2em "Trebuchet MS", Arial, sans-serif;
line-height: 2em;
text-align: left;
text-decoration: none;
padding: 4px 0;
margin-left: 12px;
}
.navigation li.selected{
position: relative;
margin-bottom: 1px;
}
.navigation li.selected a{ /*selected main tab style */
background: url(../img/nav_select.png) repeat-y;
margin-bottom: 1px;
}
.navigation li.selected a:hover, #navigation li.selected a:focus, #navigation li.selected a:active {
text-decoration: underline ;
}
As you can see there's still an issue: the rectangle is not covering the (fake) blue tab.
When I try to give a negative BG position to the "nav_select.png" it disappears.
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