// random image function //

var numberOfPics = 1; // The number of images you have to randomize

function randNum () {
     return Math.round((numberOfPics-1)*Math.random() + 1);
}

function writeImg() {
    document.writeln('<img src="images/bg/img'+ randNum() +'.jpg" width="970" height="540" alt=" " border="0" />');
}

/* Include script in web page like this...
<script language="JavaScript1.2" src="/borrower/js/random_borrower.js"></script>

...Then call the function where you want the random image to live like this...
<script language="JavaScript">writeImg();</script>
*/