var adarray = new Array()
adarray[0]= "http://goodjop.myweb.hinet.net/ad/js/google_ad_02_no_google.js"/*
adarray[1]= "http://goodjop.myweb.hinet.net/ad/js/google_ad_02_no_google.js"
adarray[2]= "http://goodjop.myweb.hinet.net/ad/js/google_ad_02_no_google.js"
adarray[3]= "http://goodjop.myweb.hinet.net/ad/js/google_ad_02_no_google.js"
adarray[4]= "http://goodjop.myweb.hinet.net/ad/js/google_ad_02_oo_google.js"*/
var rndNum = Math.round(Math.random() * (adarray.length-1));
htmlcode = '<script type="text/javascript" src="'+adarray[rndNum]+'"></script>';
document.write(htmlcode);