SideBar Image Repeat Options

[FallintoMusic]

How do I get my sidebar image repeat (no matter how much content it has) so that it goes all the way to the footer? I'm going crazy trying to figure it out. This is what the layout looks like:

[FallintoMusic]

Thanks; it was CSS. I tried using that but the same problem occurs..the side bar still won't repeat:

CODE

.container {
float: left;
overflow: hidden;
width: 100%;
margin: 0 auto;
}

#content {
background: url(images/content.gif) repeat-y;
float: left;
width: 65%;
margin-top: 32px;
padding-left: 15px;
padding-right: 30px;
padding-top: 10px;
padding-bottom: 30px;
min-height:100%;
}

#sidebar {
background: url(images/sidebar.gif) repeat-y;
width: 10%;
min-height: 100%;
margin-top: 32px;
margin-left: -228px;
padding-left: 15px;
padding-right: 30px;
padding-top: 10px;
padding-bottom: 30px;
float: left;


}