image = new Array();
image[0] = './images/0001.jpg';
image[1] = './images/0002.jpg';
image[2] = './images/0003.jpg';
image[3] = './images/0004.jpg';
image[4] = './images/0005.jpg';

var currentdate = 0
var core = 0
var ran = 60/image.length;

function ranimage() {
  currentdate = new Date();
  core = currentdate.getSeconds();
  core = Math.floor(core/ran);
  return(image[core]);
}

function swap_image(){
	document.getElementById("dynamic_image").src = ranimage();
}

swap_image();