//<![CDATA[

var images=new Array();
images[0]="images/1.jpg";
images[1]="images/2.jpg";
images[2]="images/3.jpg";
images[3]="images/4.jpg";

function randomImage() {
var i=Math.floor(Math.random()*images.length);
document.getElementById("random").src=images[i];

}
onload=randomImage;

//]]>