.forum-message-tree li {
margin-top: 4px;
line-height: 16px;

/*
* if
* line-height: 20px;
* margin-top: 0px;
* ie8 ok, but ie6 没有间距
* elsif
* line-height: 20px;
* margin-top: 4px;
* ie8 ok, ie6 ok, but ie7 间距过大
* endif
*/

margin-bottom: 0px;
margin-left: 10px;
padding-top: 0px;
padding-bottom: 0px;

list-style-position: outside;
list-style-image: url(../images/treenode_solid.gif);
}

唉。我真 z-turn，鼓捣这玩意做咩啊。