Random Image Map Needs Links

I have a page on which a random image loads. Each image needs an accompanying image map to take you to the appropriate link. How do I make the appropriate image map links load? Here is my code so far, which works fine.

myStrip = new Array("images/hstrip_1.jpg","images/hstrip_2.jpg");
imgCt = myStrip.length;

function chooseStrip() {
if (document.images) {
randomNum = Math.floor((Math.random() * imgCt));
document.strip.src = myStrip[randomNum];
}
}