ranimg = new Array();
ranimg[0] = "homeMainImage.jpg";
ranimg[1] = "homeMainImage2.jpg";
ranimg[2] = "homeMainImage3.jpg";
chip = Math.floor(ranimg.length * Math.random());
ranimg = ranimg[Math.floor(chip)];
document.write('<img src="images/home/'+ ranimg +'" alt="" width="677" height="265" />');