var ImageArr1 = new Array("images/staff-1.png","images/staff-2.png");
  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)+")",1500);
  }
  
  RotateImages(1,0);