repeat background Options

[rayyyy]

Okay, so I designed this layout and i want to have the striped background continue down and I'm not sure how to do that. This is the code..

CODE

body {
    font-family: "Trebuchet MS", Arial, sans-serif;
    font-size: 12px;
    text-align:justify;
    line-height: 20px;
    color: #202020;
    padding:0; margin:0;
    background: url(images/mtlay5.png) no-repeat center top;
}

the mtlay5.png is the header image: Header Image

What can i put in my code and where to make the background continue on?

Thanks,

Rachel