// Get random image
var randImg = new Array('main-image','main-image2','main-image3','main-image4','main-image5');
var randLink = new Array();
var max = randImg.length;
var num = Math.floor((Math.random() * max));
document.write('<img src="images/'+randImg[num]+'.jpg" alt="blade farming - A modern approach to traditional farming" width="563" height="182" />');