ul.tree, ul.tree  {
list-style-type: none;
margin: 0;
padding: 0 0 5px 0;

}

ul.tree img.arrow {
padding: 2px 0 0 0;
border: 0;
width: 20px;
}

ul.tree li {
padding: 4px 0 0 0;
clear: both;
}

ul.tree li ul {
padding: 0 0 0 20px;
margin: 0;
list-style-type: none;
}

ul.tree label {
cursor: pointer;
font-weight: bold;
float: left;
display: inline;
white-space: nowrap;
}

ul.tree label.hover {
color: red;
}

ul.tree li .arrow {
width: 16px;
height: 16px;
padding: 0;
margin: 0;
cursor: pointer;
float: left;
background: transparent no-repeat 0 3px;
}

ul.tree li .collapsed {
background-image: url(images/collapsed.gif);
}

ul.tree li .expanded {
background-image: url(images/expanded.gif);
}

ul.tree li .checkbox {
width: 20px;
height: 20px;
padding: 0;
margin: 0;
cursor: pointer;
float: left;
background: transparent no-repeat 0 -5px;
background-image: url(images/check0.gif);
}

ul.tree li .checked {
background-image: url(images/check2.gif);
}

ul.tree li .half_checked {
background-image: url(images/check1.gif);
}