download background image for each section

how to change the background picture for each section? .i know that are in the folder which name is "custom"/

In layout designer you notice each row has some class name, and in layout.css you have definitions for taht classes:

.socialrow {
background:url(../images/custom/header_bg.jpg);
min-height: 145px;
}

.topmenurow {
background:#6C0108 url(../images/custom/topmenu_bg.jpg) repeat-x;
}

.fullwidth {
background: #6c0108;
}

.contentrow {
background: url(../images/custom/events_bg.jpg);
}

.footerrow {
background: #6f0109;
text-align: center;
color: #fff;
font-size: 18px;
}

some have background image , some have just bcg. color. Anyway you see the point and how to change that.

Thank you very much. So as I understand I need to use FTP ?

Layout.css is accessible from template manager but it's sure you can always use FTP

can you help me ? i have this situation-- then i change the name in main top menu the link become stopworking
only "gallery" still working ,rest not works

So that is sort of "One page template" , if link points to "#something" you need to have <a id="something" on target position on page.