帮忙看下下面这段代码 在 firefox里不能实现的问题

<div id= "roolDiv " style= "overflow:hidden; " >

<ul id= "roolUl ">

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=F00108 " target= "_blank " > XIAMEN ORIENT SOAR INTERNATIONAL CO.,LTD. </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=G00227 " target= "_blank " > HANGZHOU YUNJIANG TEXTILES CO.,LTD </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=N00118 " target= "_blank " > NINGBO JINMAO IMPORT & EXPORT CO., LTD </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=F00184 " target= "_blank " > JINJIANG YUDENG TEXTILE CO.,LTD </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=F00120 " target= "_blank " > FU DA KNITING INDUSTRIAL CO.,LTD.OF SHI SHI CITY </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=F00033 " target= "_blank " > SHISHI HUAFEI GARMENTS CO.,LTD </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=G00047 " target= "_blank " > GUANGZHOU XINSHENG INDUSTRIAL CO.,LTD. </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=G00269 " target= "_blank " > LANXI HONGYUAN CRAFTS&GIFTS CO.,LTD </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=N00130 " target= "_blank " > NINGBO AMANDA FASHION CO.,LTD </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=N00100 " target= "_blank " > NINGBO HOLHAN COMPANY LIMITED </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=N00076 " target= "_blank " > NINGBO JEAGLE KNITTING CO., LTD </a> </li>

<li> <a href= "EnterpriseWeb/AboutUs.aspx?member=L00044 " target= "_blank " > NINGBO FREE TRADE ZONE E-SUN GARMENT CO.,LTD </a> </li>