FF 中iframe显示的问题

我的FF 版本是4.0.1
请问你用的是哪个版本的FF呢？
顺便贴下我的CSS、不知道和CSS有木有关系body {margin:0; padding:0;}
#eg {
background-image:url("../image/bg.gif");
background-repeat:no-repeat;
margin-top:10%;
margin-left:30%;
text-align:center;
border:1px solid #666;
overflow:hidden;
height:150px;
width:400px;
}
#login
{
height:10px;
width:400px;
  margin-top:20px;
text-align:center;
}
#home
{
position:relative;
  margin:0 auto;
height:680px;
width:960px;
  font-size:25px;
  line-height:70px;
border:1px solid #666;
}

#menu
{
margin:0;
width:960px;
height:30px;
z-index:0;
}
#menu ul 
{
position:absolute;
list-style-type:none;
margin:0 auto;
padding:0px;
}
#menu ul li 
{

float:left;
margin:0 auto;  
}
#menu ul li a ,.menu ul li a:visited
{
display:block;
width:119px;
height:30px;
color:#000;
text-decoration:none;
text-align:center;
line-height:30px;
border:1px solid #fff;
border-width:1px 1px 0 0;
font-size:12px;
background-color:#0099ff;

}
#menu ul li ul 
{
display:none;
}
#menu ul li:hover ul
{
width:100px;
display:block;
}
#menu ul li a:hover
{
background-color:#ee8833;
color:#fff;
font-size:15px;
}
#sidebar_left
{ 
position:absolute;
top:63px;
left:10px;
height:590px;
width:260px;
border:1px solid #666;
z-index:-1;
}

#sidebar_left_detail
{
line-height:35px;
font-family:arial,sans-serif;
font-size:14px;
text-align:left;
}#sidebar_left_banner
{
height:28px;
width:260px;
border-style:solid;
border-top:0;
border-right:0;
border-bottom:1px;
border-left:0;
  border-bottom-color:#666666; 
  top:1px;
  background-color:#0099ff; }#sidebar_right
{
  position:absolute;
  top:63px;
  left:280px;
  height:590px;
width:670px;
border:1px solid #666;
z-index:-2;
}#sidebar_right_banner
{
height:28px;
width:670px;
  background-color:#0099ff;
}

#sidebar_right_select
{
height:30px;
width:670px;
border-style:solid;
border-width:0 0 1px 0;
border-bottom-color:#666666;
font-size:15px;
}#sidebar_right_select_banner
{
height:28px;
width:670px;
border-style:solid;
border-top:0;
border-right:0;
border-bottom:1px #666666;
border-left:0;
  background-color:#0099ff;
}#splitpage
{
width:220px;
height:50px;
border:0;
margin-top:60px;
margin-left:33%;
  font-size:14px;
  line-height:23px;
  text-align:center;
}

#tb1
{
margin-top:4px;
width:670px;
height:25px;
border:solid 1px;
font-size:14px;
border-width:1px 0 0 0;
border-collapse:collapse;
}

#tb1 th
{
text-align:left;
border:solid 1px;#666;
border-width:0 1px 1px 0; 
}

#tb2
{
font-size:15px;
width:670px;
border:solid 1px;
border-width:0 1px 0 0;
border-collapse:collapse;
}
#tb2 td
{
border:solid 1px;#666;
border-width:0 1px 1px 0; 
}
#tb2 tr:hover{
background-color:#eee;
}#select_page
{
font-size:15px;
text-align:center;
}
#editpage
{

height:500px;
width:600px;
text-align:center;
}#tb3
{ 

  border:solid 1px;
  line-height:25px;
   font-size:14px; }
#tb3 td
{
border:solid 1px;
}