.split-custom-wrapper {
    /* position wrapper on the right of the listitem */
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
}

.split-custom-button {
    position: relative;
    float: right;   /* allow multiple links stacked on the right */
    height: 100%;
    margin:0;
    min-width:3em;
    /* remove boxshadow and border */
    border:none;
    moz-border-radius: 0;
    webkit-border-radius: 0;
    border-radius: 0;
    moz-box-shadow: none;
    webkit-box-shadow: none;
    box-shadow: none;
}

.split-custom-button span.ui-btn-inner {
    /* position icons in center of listitem*/
    position: relative;
    margin-top:0%;
    margin-left:50%;
    /* compensation for icon dimensions */
    top:6px; 
    left:-12px;
    height:80%; /* stay within boundaries of list item */
}