Problem with double images when I move the cursor over the images...

Here is the CSS code. I don't have any javascript code on the sales page.

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ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,body,html,p,bl ockquote,fieldset,input{
margin:0;
padding:0;
}
ul{
list-style:none;
}
fieldset{
border:0;
}
a img{
border:0;
}
.clear{
clear:both;
}

body {
background: url(bodybg.jpg);
font-family: arial, sans-serif;
font-size:12px;
color:#666666;
margin:0;
padding:0;
}

#container{
width: 100%;
background: url(wrapperbg.jpg) top repeat-x;
}

a{
color: #003399;
text-decoration: none;
}
p {
line-height: 170%;
color: #666666;
font-size: 13px;
padding: 5px 0px 5px 0px;
}
h1 {
font-size:30px;
font-weight:bold;
color:#272e34;
line-height:1.5;
padding: 5px 0px 5px 0px;
}
h2 {
font-family: arial, sans-serif;
font-size:24px;
color:#000;
line-height:1.5;
padding: 5px 0px 5px 0px;
}
#wrapper {
width:988px;
margin:0pt auto;
}

#navigation{
width: 960px;
height: 70px;
padding: 0px 10px 0px 14px;
text-align:right;
}

.title{
padding: 0;
height: 70px;
font-size: 24px;
float: left;
margin-right: 20px;
}

.title, .title a {
color: #fff;
}

#navigation ul{
display: inline;
}

#navigation li{
display: inline;
}

#navigation li a{
display: inline-block;
white-space: nowrap;
height: 44px;
padding: 25px 19px 0px 19px;
color: #fff;
font-weight: bold;
font-size: 12px;
text-decoration: none;
}

#navigation li a:hover{
color: #000000;
padding: 25px 18px 0px 19px;
border-right: 1px solid #020201;
background: #ffcc00;
text-decoration: none;
}

#navigation li#active a{
color: #000000;
padding: 25px 18px 0px 19px;
border-right: 1px solid #020201;
background: #ffcc00;
}

#header{
width: 960px;
height: 240px;
margin: 0px 14px;
}

.weebly_header{
background: url(cust_headerImg.jpg) no-repeat;
}


#weebly-menus .weebly-menu-wrap { z-index: 5000; margin: 1px 0px 0px 0px; }
#weebly-menus .weebly-menu { padding: 0; margin: 0; list-style: none; }
#weebly-menus .weebly-menu li { float: left; clear: left; width: 163px; text-align: left; }
#weebly-menus .weebly-menu li a { position: relative; display: block; width: 100%; background: #000; border-top: none; border-bottom: 1px solid #999; border-right: none; border-left: none; text-decoration: none; font-size: 12px; font-weight: normal; line-height:1; padding: 5px 6px 5px 12px; color: #fff; }
#weebly-menus .weebly-menu li a:hover { background: #ffcc00; color: #000000; }

#content{
width: 910px;
height:auto !important;
min-height:400px;
float: left;
padding: 15px 39px 35px 39px;
}

#contenttop{
width: 988px;
float: left;
background: url(contentbg.jpg) repeat-y;
}
#contentbtm{
width: 988px;
float: left;
padding: 0px 0px 10px 0px;
background: url(contentbtm.jpg) bottom no-repeat;
}

#content a{
color: #003399;
font-weight: bold;
text-decoration: none;
}

#footer{
width: 950px;
color: #333333;
font-size: 14px;
clear: both;
padding: 17px 24px 20px 14px;
}

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