var ImageArr1 = new Array("images/toolbox-man-1.jpg", "images/toolbox-man-2.jpg");
var ImageHolder1 = document.getElementById('photo');

function RotateImages(whichHolder,Start)
{
var a = eval("ImageArr"+whichHolder);
var b = eval("ImageHolder"+whichHolder);
if(Start>=a.length)
Start=0;
b.src = a[Start];
window.setTimeout("RotateImages("+whichHolder+","+ (Start+1)+")",3000);
}

RotateImages(1,0);