how to add script, background!! Options

[rosedoll]

i have this script here:
<script language=javascript>
var pic=new Array(5)
pic[0]=""
pic[1]=""
pic[2]=""
pic[3]=""
pic[4]=""
pic[5]=""
pic[6]=""
pic[7]=""

var newdate=new Date()
var getpic=newdate.getSeconds()%pic.length
document.write('<STYLE>')
document.write('body{ background-image: url('+pic[getpic]+');')
document.write(' background-repeat: no-repeat; ')
document.write('background-attachment: fixed; ')
document.write('background-position: 50% 100% }')
document.write('</STYLE>')
</script>

Is to random your backgrounds right?``i want one or two of my background pics to repeat and stf`` what and where do i add the "background-repeat: repeat;" to?
thankyou for helping``