// store an interval in a variable

var pause = 2000;

// create and initialize a counter

var n = 0;

// create an array of image file names

var imgs = new Array ("../small_m203.jpg", "../small_m60.jpg", "../small_barrel.jpg", "../small_mk23.jpg" );

// preload all the images

var preload = new Array();

for( var i = 1; i < imgs.length; i++ )
{
  preload[i] = new Image();
  preload[i].src = imgs[i];
}

// a function to display each image for the set interval

function rotate()
{
  window.document.images.pic.src = imgs[n];
  ( n == (imgs.length - 1 )) ? n = 0 : n++;
  window.setTimeout( "rotate()", pause );
}

// specify the onload event-handler

window.onload = rotate;