/*************************************************************************
  This code is from Dynamic Web Coding at www.dyn-web.com
  Copyright 2003-4 by Sharon Paine 
  Get full source code at www.dyn-web.com/scripts/rotate-rand/
  See Terms of Use at www.dyn-web.com/bus/terms.html
  regarding conditions under which you may use this code.
  This notice must be retained in the code as is!
*************************************************************************/
function initImgRotation() {
  // create rotating image objects here 
  // arguments: image name, rotation speed
  var rotator1 = new rotateImgObj('img1',5000);
  // add the images to rotate into that image object 
  rotator1.addImages( 'wood.jpg','branches.jpg', 'horse.jpg', 'lighthouse.jpg');
  rotator1.rotate();
  
  rotateImgObj.start();
}

// If all the images you wish to display are in the same location, you can specify the path here 
rotateImgObj.imagesPath = "http://www.dioceseofgaylord.org/assets/insiderot/winter/";
rotateImgObj.counter = 0;
// 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; arguments[i]; i++) {
      this.imgObj.imgs[i] = new Image();
      this.imgObj.imgs[i].src = rotateImgObj.imagesPath + arguments[i];
    }
  },

  rotate: function() { // controls rotation
    var ctr = rotateImgObj.counter; //Math.floor( Math.random() * this.imgObj.imgs.length );
	rotateImgObj.counter++;
	if(rotateImgObj.counter >= this.imgObj.imgs.length){
		rotateImgObj.counter = 0;
	}
    if (ctr == this.ctr) ctr = (ctr > 0)? --ctr: ++ctr;
    this.ctr = ctr;
    if ( typeof this.imgObj.filters != "undefined" ) {
   		this.imgObj.style.filter = 'blendTrans(duration=1)';
      if (this.imgObj.filters.blendTrans) this.imgObj.filters.blendTrans.Apply();
    }
    this.imgObj.src = this.imgObj.imgs[this.ctr].src;
    if ( typeof this.imgObj.filters != "undefined" && this.imgObj.filters.blendTrans )
      this.imgObj.filters.blendTrans.Play();    
  }
}

// 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);                     
  }
}