In Internet Explorer 6, the background image is repeated all over the page

I have just tested my website in Internet Explorer 6, and the result was the background image repeated all over the page and that is not what it is supposed to do. Can someone please have a look at the css which is below and tell me how I can solve this problem? Thanks in advance.

My css:


body {
	text-align:center; /* center #pageWrapper IE 5.x */
	font:normal 80%/140% arial,helvetica,sans-serif;
	background: url('images/mainbg.gif') no-repeat 50% 22% fixed;
	color: #000;
}

Do you have a link to the page as the code looks ok so far.