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JavaScript Rotate Image

function initImgRotation()

{
// create rotating image objects here
// arguments: image name, rotation speed (milliseconds)

var rotator1 = new rotateImgObj('img1',2500);
// add the images to rotate into that image object
rotator1.addImages("sample7.jpg","sample8.jpg","sample9.jpg");
// add the corresponding actions to take onclick of those images
// (last one shows how to do nothing onclick)
rotator1.addActions("http://www.link.com", "http://www.link.com", "http://www.link.com");
rotator1.rotate();

var rotator2 = new rotateImgObj('img2', 4000);
rotator2.addImages("sample2.jpg","sample3.jpg");
// demonstrates how to call another function onclick
rotator2.addActions("http://www.link.com", "http://www.link.com");
rotator2.rotate();

rotateImgObj.start();
}

// for example function call onclick
// This function demonstrates how to obtain some of the information available about the image clicked on
function doMsg() {
var obj = rotateImgObjs[1]; // refers to 2nd rotateImgObj (i.e., rotator2)
var msg = "You clicked on " + obj.imgObj.src;
msg += ". It's height is " + obj.imgObj.imgs[obj.ctr].height + " pixels.";
alert(msg);
} // If all the images you wish to display are in the same location, you can specify the path here
rotateImgObj.imagesPath = "ads/";
// if you want url's to open in separate window, un-comment this line
//rotateImgObj.tgt = "_blank"; // no need to edit code below
/////////////////////////////////////////////////////////////////////
rotateImgObjs = []; // holds all rotating image objects defined
// constructor
function rotateImgObj(nm,s) {
this.speed=s; this.ctr=0; this.timer=0;
this.imgObj = document.images[nm]; // get reference to the image object
this.index = rotateImgObjs.length; rotateImgObjs[this.index] = this;
this.animString = "rotateImgObjs[" + this.index + "]";
} rotateImgObj.prototype = {
addImages: function() { // preloads images
    this.imgObj.imgs = [];
    for (var i=0; i<arguments.length; i++) {
      this.imgObj.imgs[i] = new Image();
      this.imgObj.imgs[i].src = rotateImgObj.imagesPath + arguments[i];
    }
},

addActions: function() {
    this.actions = [];
    for (var i=0; i<arguments.length; i++) { this.actions[i] = arguments[i]; }
},

rotate: function() {
    if (this.ctr < this.imgObj.imgs.length-1) this.ctr++;
    else this.ctr = 0;
    this.imgObj.src = this.imgObj.imgs[this.ctr].src;
}
} // sets up rotation for all defined rotateImgObjs
rotateImgObj.start = function() {
for (var i=0; i<rotateImgObjs.length; i++)
    rotateImgObjs[i].timer = setInterval(rotateImgObjs[i].animString + ".rotate()", rotateImgObjs[i].speed);
} // called onclick of images
rotateImgObj.doClick = function(n) {
if ( document.images && rotateImgObjs[n] ) {
    var obj = rotateImgObjs[n]; // shorten reference
    if ( obj.actions && obj.actions[obj.ctr] ) {
  if ( typeof obj.actions[obj.ctr] == "string" ) {
        if ( rotateImgObj.tgt == "_blank" ) {
          // open in separate window (add features here if you want, i.e., chrome, size, position, ...)
          var win = window.open(obj.actions[obj.ctr], "subwin");
          if ( win && !win.closed ) win.focus();
        } else window.location = obj.actions[obj.ctr];
      } else obj.actions[obj.ctr]();
    }
    return false;
} else return true;
} // for stopping/starting onmouseover/out
rotateImgObj.pause = function(n) {
if (rotateImgObjs[n]) clearInterval(rotateImgObjs[n].timer);
} rotateImgObj.resume = function(n) {
if ( rotateImgObjs[n] ) {
    var obj = rotateImgObjs[n]; // shorten reference
    obj.rotate(); // rotate now and resume repeated calls
    obj.timer = setInterval( obj.animString + ".rotate()", obj.speed );
}
}
</script>