Sai 你研究一下，看看根据IE的解决办法，FF有没有可能

.t_msgfont, .t_msgfont table {
font-size: 12px;
}

.t_msgfont, .t_msgfont table {
word-wrap:break-word;
}

td.origin {
font-size: 12px;
color: #000;
text-align: left;
background-image: url("/bbs/images/way/td_05.gif");
word-break: break-all;
word-wrap: break-word;
line-height: 18px;
}

td.origin {
color: #000;
text-align: left;
background-image: url("/bbs/images/way/td_05.gif");
}