What they're doing is they hide the submit buttons, push the sidebar down a few hundred pixels, wrap some links in h6 headers, and style and position them to look like submit buttons.
This is the CSS they use:
.side .md h6 a {
position: absolute;
top: 60px;
font-size: 14px;
color: #fff !important;
z-index: 1000;
box-shadow: 0 1px 5px rgba(0, 0, 0, .24);
background-color: #006064;
background-image: url(%%spritesheet%%) !important;
background-position: 268px -214px !important;
background-repeat: no-repeat !important;
right: 16px;
width: 300px;
height: 36px;
border-radius: 2px;
line-height: 36px;
border: none;
text-align: left;
padding: 0 16px;
transition: all .25s ease;
font-family: verdana, arial, sans-serif
}
.side .md h6 a:hover {
background-color: #00838F
}
.sidebox.submit {
display: none
}
.side .md h6:nth-of-type(1) a {
top: 150px
}
.side .md h6:nth-of-type(2) a {
top: 190px
}
.side .md h6:nth-of-type(3) a {
top: 230px
}
.side .md h6:nth-of-type(4) a {
top: 270px
}
.side .md h6:nth-of-type(5) a {
top: 310px
}
.side .md h6:nth-of-type(6) a {
top: 350px
}
.side .md h6:nth-of-type(7) a {
top: 390px
}
.side .md h6:nth-of-type(8) a {
top: 430px
}
.side .md h6:nth-of-type(9) a {
top: 470px
}
.side {
margin-top: 600px !important
}
.linkinfo {
margin-top: 200px
}
To get the buttons, you put nine links in your sidebar wrapped in an h6 header like so:
###### [submit button 1](/link) [submit button 2](/link) [submit button 3](/link) [submit button 4](/link) [submit button 5](/link) [submit button 6](/link) [submit button 7](/link) [submit button 8](/link) [submit button 9](/link)