hierarchical-checkboxes.css

/* --> Generic hierarcy checkbox fields*/

.hierarchy-checkboxes{
    float: left;
    width: 200px;
    border: 1px solid transparent;
}
input.hierarchy-root-checkbox[type=checkbox]{
    float: left;
    margin: 6px 5px 0 5px;
}
label.hierarchy-root-label{
    font-weight: normal;
    padding: 3px;
    margin: 0;
}
label.hierarchy-root-label:hover,
.hierarchy-root-child .hierarchy-label:hover{
    background: #eee;
}
.hierarchy-checkboxes.child-expanded{
    border: 1px solid #ccc;
    border-bottom: none;
}
.hierarchy-root-child{
    position: absolute;
    display: none;
    border: 1px solid #ccc;
    width: 200px;
    z-index: 55;
    background: #fff;
    border-top: none;
}
.hierarchy-root-child .hierarchy-node{
    clear: both;
    display: block;
    padding-left: 8px;
    background: url("dashed-line-vertical.gif") repeat-y scroll left top rgba(0, 0, 0, 0);
    margin-left: 9px;
  
}
.hierarchy-root-child .hierarchy-label{
    background: url("dashed-line-horizontal.gif") no-repeat scroll 13px 12px rgba(0, 0, 0, 0);
    margin: 0 0 0 -20px;
    font-weight: normal;
    padding-top: 5px;
    display:block;
}

.hierarchy-checkboxes .expand-collapse-button,
.hierarchy-root-child .hierarchy-node .expand-collapse-button{
  display:block;
  content:" ";
  float:left;
  background: url("expand.png") no-repeat scroll 0 4px transparent;
  width:16px;
  height:16px;
  margin-top: 1px;
}
.hierarchy-checkboxes.child-expanded .expand-collapse-button,
.hierarchy-root-child .hierarchy-node.child-expanded >.expand-collapse-button{
  background: url("collapse.png") no-repeat scroll 0 4px transparent;
}
.hierarchy-root-child .hierarchy-node.leaf .expand-collapse-button{
  background:none;
  width:6px;
}
.hierarchy-root-child input[type=checkbox]{
    float: left;
    margin: 3px;
    margin-top: 8px;
}


/* <-- Generic hierarcy checkbox fields*/