.dropdown-submenu {
    position:relative;
}

.dropdown-submenu>.dropdown-menu {
    /*
    top:0;
    left:100%;
    margin-top:-6px;
    margin-left:-1px;
    -webkit-border-radius:0 6px 6px 6px;
    -moz-border-radius:0 6px 6px 6px;
    border-radius:0 6px 6px 6px;
    */
    bottom: 0;
    left: 100%;
    margin-bottom: -12px;
    margin-left: -4px;
    -webkit-border-radius: 6px 6px 6px 0;
    -moz-border-radius: 6px 6px 0;
    border-radius: 6px 6px 6px 0;
}

.dropdown-submenu>a:after{
    display:block;
    content:" ";
    float:right;
    width:0;
    height:0;
    border-color:transparent;
    border-style:solid;
    border-width:5px 0 5px 5px;
    border-left-color:#cccccc;
    margin-top:5px;
    margin-right:-10px;
}

.dropdown-submenu:hover>a:after{
    border-left-color:#ffffff;
}

.dropdown-submenu.pull-left{
    float:none;
}

.dropdown-submenu.pull-left>.dropdown-menu{
    left:-100%;
    margin-left:10px;
    -webkit-border-radius:6px 0 6px 6px;
    -moz-border-radius:6px 0 6px 6px;
    border-radius:6px 0 6px 6px;
}