Someone

.otherlang {
display:none;
}

.mainlang {
display:block;
}

li.mainlangcom, li.otherlangcom {
border-top:1px solid #555; /*same color as border of mainlang*/
border-left:1px solid #555;
border-right:1px solid #555;
list-style:none;
float: left;
margin-left:3px;
padding-left:2px;
padding-right:2px;
padding-bottom:2px;
background-color:#ddd;
cursor:pointer;
}

li.mainlangcom {
position:relative;
background-color:#fff; /* same color as that of elements*/
cursor:inherit;
}

.commandgroup {
font-size:10px;
padding:0px;
margin-bottom:0px;
border-bottom:1px solid #555; /*same color as border of commands*/
overflow: hidden;
}