#slide_cont{
    position:relative;
    text-align: center;
}
#slideshow_image{
    height:335px;
    width:auto;
}
#prev_image
{
 width:40px;
 height:40px;
 position:relative;
 margin-left:30px;
}
#next_image
{
 width:40px;
 height:40px;
 position:relative;
 left:620px;
}
#buttons{
    position:absolute;
    top:50%;
}