var bannerId = Math.floor(Math.random()*20).toString();
if(bannerId.length!=2) bannerId = "0"+bannerId;

var imagePath = "http://www.flashdynamix.com/blog/wp-content/images/fitc/2010/toronto/FITC_Toronto2010_260x160.jpg";
var imageLink = "http://www.fitc.ca/events/speakers/speaker.cfm?event=102&speaker_id=12655";

document.write('<a href="'+imageLink+'" /><img src="'+imagePath+'" width="260" height="160"/></a>');