How do i change the size of the picture on my background?

i can change the background but is just one big picture. i want to change it so that the picture repeats. downloading the picture from photobucket.How do i change the size of the picture on my background?
put this code within the %26lt;head%26gt; tag of your web site (before the %26lt;body%26gt; tag...





%26lt;style type=';text/css';%26gt;

body

{

background-image:

url('yourimage.jpg');

background-repeat: repeat

}

%26lt;/style%26gt;