css3 menu with inverse rounded corners

Question

I designed a navigation menu which looks like the image here:

I want to cod

Answer 1

HTML

    

        

            

            
        
   
    

    

        
Item 1
        
Item 2
        
Item 3
    

    

        

            

            
        
   
    

CSS

.outer_bg_left, .outer_bg_right {
    float: left;
    width: 70px;
    background-color: #994;
    height: 15px;
    overflow: hidden;
    position: relative;
    z-index: 10;
}

.outer_bg_left .outer {
    height: 25px;
    border-radius:  0 10px 0 0;
    background-color: #fff;
}

.outer_bg_right .outer {
    height: 25px;
    border-radius:  10px 0 0 0;
    background-color: #fff;
}

.outer_bg_left .outer_shadow, .outer_bg_right .outer_shadow {
    box-shadow:  0 0 5px 2px rgba(0,0,0, .7) inset;
    padding-bottom: 10px;
    margin-bottom: -10px;
    height: 25px;
}

.outer_bg_left .outer_shadow {
    border-radius: 0 10px 0 0;
    padding-left: 30px;
    margin-left: -30px;
}

.outer_bg_right .outer_shadow {
    border-radius:  10px 0px 0 0;
    padding-right: 30px;
    margin-right: -30px;
}

.menu_item_cont {
    background-color: #994;
    border-radius: 0 0 10px 10px;
    box-shadow: 0 0 5px 2px rgba(0,0,0, .7);
    background-color: #994;
    display: block;
    float: left;
}

.menu_item {   
    border-radius: 0 0 10px 10px;
    background-color: #994;
    height: 20px;
    padding: 5px 10px;

    font-family: Arial;
    line-height: 20px;
    font-size: 14px;
    font-weight: bold;
}

.menu_item:hover {
    background-color: #000;
    border-radius: 10px;
    height: 30px;
    line-height: 30px;
    color: #fff;
}

http://jsfiddle.net/gXQzU/4/

It's just my first attempt, but I think it looks quite promising.