大家帮我改一下下拉菜单，

<style type= "text/css ">
.menu {
font-family: verdana, sans-serif;
width:750px;
position:relative;
font-size:0.85em;
padding-bottom:250px;
}
.menu ul {
padding:0;
margin:0;
list-style-type: none;
}
.menu ul li {
float:left;
position:relative;
}
.menu ul li a, .menu ul li a:visited {
display:block;
text-decoration:none;
color:#000;
width:139px;
height:3em;
color:#000;
border:1px solid #fff;
border-width:1px 1px 0 0;
background:#dfc184;
padding-left:10px;
line-height:3em;
}
* html .menu ul li a, .menu ul li a:visited {
width:149px;
w\idth:139px;
}
.menu ul li ul {
display: none;
}
table {
margin:-1px;
border-collapse:collapse;
font-size:1em;
}

/* specific to non IE browsers */
.menu ul li:hover a {
color:#fff;
background:#bd8d5e;
}
.menu ul li:hover ul {
display:block;
position:absolute;
top:3em;
margin-top:1px;
left:0;
width:150px;
}
.menu ul li:hover ul li ul {
display: none;
}
.menu ul li:hover ul li a {
display:block;
background:#faeec7;
color:#000;
height:auto;
line-height:1.2em;
padding:5px 10px;
width:129px
}
.menu ul li:hover ul li a.drop {
background:#c9c9a7 url(../../graphics/drop.gif) bottom right no-repeat;
}
.menu ul li:hover ul li a:hover {
background:#c9c9a7;
color:#000;
}
.menu ul li:hover ul li:hover ul {
display:block;
position:absolute;
left:150px;
top:0;
width:150px;
}
.menu ul li:hover ul li:hover ul.left {
left:-150px;
}

</style>
<!--[if lte IE 6]>
<style type= "text/css ">
.menu ul li a:hover {
color:#fff;
background:#bd8d5e;
}
.menu ul li a:hover ul {
display:block;
position:absolute;
top:3em;
left:0;
background:#fff;
margin-top:0;
marg\in-top:1px;
}
.menu ul li a:hover ul li a {
display:block;
background:#dbe4ab;
color:#000;
height:auto;
line-height:1.5em;
padding:5px 10px;
width:150px;
w\idth:129px;
}
.menu ul li a:hover ul li a.drop {
background:#c9c9a7 url(../../graphics/drop.gif) bottom right no-repeat;
}
.menu ul li a:hover ul li a ul {
visibility:hidden;
position:absolute;

height:0;
width:0;
}
.menu ul li a:hover ul li a:hover {
background:#c9c9a7; color:#000;
}
.menu ul li a:hover ul li a:hover ul {
visibility:visible;
position:absolute;
top:0;
color:#000;
left:150px;
}
.menu ul li a:hover ul li a:hover ul.left {
left:-150px;
}

</style>
<![endif]-->
<div class= "menu ">

<ul>
<li> <a class= "drop " href= "../menu/index.html "> DEMOS
<!--[if IE 7]> <!-->
</a>
<!-- <![endif]-->

<table> <tr> <td>

<ul>
<li> <a href= "../menu/zero_dollars.html " title= "The zero dollar ads page "> zero dollars advertising page </a> </li>
<li> <a href= "../menu/embed.html " title= "Wrapping text around images "> wrapping text around images </a> </li>
<li> <a href= "../menu/form.html " title= "Styling forms "> styled form </a> </li>
<li> <a href= "../menu/nodots.html " title= "Removing active/focus borders "> active focus </a> </li>

<li> <a class= "drop " href= "../menu/hover_click.html " title= "Hover/click with no active/focus borders "> hover/click with no borders
<!--[if IE 7]> <!-->
</a>
<!-- <![endif]-->


<table> <tr> <td>
<ul>
<li> <a href= "../menu/form.html " title= "Styling forms "> styled form </a> </li>
<li> <a href= "../menu/nodots.html " title= "Removing active/focus borders "> removing active/focus borders </a> </li>
<li> <a href= "../menu/hover_click.html " title= "Hover/click with no active/focus borders "> hover/click </a> </li>
</ul>
</td> </tr> </table>

<!--[if lte IE 6]>
</a>


[解决办法]
<iframe align= 'absmiddle ' src = 'http://www.dangdang.com/Association/Web/Links/ProductLinkShow.aspx?c1=E6E6E6&c2=FFFFFF&c3=060606&c4=000000&c5=FC2D04&p1=9279039&LinkID=52148 ' frameborder= '0 ' height = '296 ' width = '152 '> </iframe>