you only want to remove the bottom scrollbar?
if so, add overflow: hidden; to the .formBox style in the formStyles.css file:
.formBox {
background-color: #dcdcdc;
height: auto;
width: 600px;
margin-left: 25px;
position: relative;
bottom: 95px;
float: left;
font-family: Verdana, Arial, Helvetica, sans-serif;
padding: 8px;
overflow: hidden;
}