.tree 
{ 
  padding:0; 
  font-family: Arial, sans-serif; 
  width: 100%; 
}
.tree UL { list-style-type: none; }
.tree SPAN.node { cursor:hand; cursor:pointer; color:red;}

.tree A { text-decoration: none; }
.tree A:link    {color:blue}
.tree A:active  {color:red}
.tree A:visited {color:purple}
.tree A:hover   {color:red;text-decoration:underline}