IE7 hover image partially seen

[mc752]

I have an issue with IE7 and my CSS, I have a background hover when mouse over on a right navigation menu. On IE6 and Firefox it views perfect. However, in IE7 I get a gray line on the top not the entire image which is simply a gray oval to indicate mouse-over. It validates without any errors, and is driving me nuts!
Any help is greatly appreciated.

Here is my CSS code

.navright {
font-family:Arial, Helvetica, sans-serif;
font-size:12px;
font-style:normal;
line-height:normal;
font-weight:bold;
color:#FFFFFF;
text-decoration:none;
background-color:#000000;
text-align:center;
text-indent:5px;
vertical-align:middle;
padding-bottom: 2px;
padding-top: 2px;
padding-left: 5px;
}
.navright ul {
padding:0;
list-style:none;
line-height:25px;
font-size:12px;
font-weight:bold;
}
.navright li {
padding-bottom:2px;
}
.navright li a:hover {
height: 1%;
color: #FFFFFF;
background-color: #000000;
background-image: url(../images/back-rtroll.gif);
background-repeat: no-repeat;
background-position: center center;
text-decoration: none;
color: #CC6600;
position: relative;
}
.navright li a {
height:1%;
display:block;
font-size:12px;
color: #ffffff;
text-decoration: none;
padding:2px 0 2px 2px;
}

[Arbitrator]

I have an issue with IE7 and my CSS, I have a background hover when mouse over on a right navigation menu. On IE6 and Firefox it views perfect. However, in IE7 I get a gray line on the top not the entire image which is simply a gray oval to indicate mouse-over.Do you seriously think that anyone is going to be able to solve your issue with such little information? You need to post the HTML, images, and any other relevant files too. Right now, all I can tell is that you have a very inefficient style sheet.

[mc752]

Here is the html code which corresponds to the CSS:
<td colspan="2" height="294" class="navright">
<ul>
<li><a href="registrar.htm">Vital Records</a></li>
<li><a href="clerk.htm"> Deeds of Trust</a></li>
<li><a href="clerk.htm">Passport Information</a></li>
<li><a href="registrar.htm">Register to Vote</a></li>
<li><a href="clerk.htm">Death Certificate</a></li>
<li><a href="clerk.htm">Birth Certificate</a></li>
</ul></td></tr>
http://www.sanbenitocountyelections.us/final3.html

[mc752]

I have solved the problem, thanks.