/*
 * RotatingAds.js
 * Javascripts used for rotating ads
 *
 * @copyright Copyright 2007-2010 Tenchi Marketing Pte Ltd
 * @version $Id: RotatingAds.js 2010-06-24
 */

// Comma separated list of images to rotate 
var imgs = new Array();
var links = new Array();
var alts = new Array();
// delay in milliseconds between image swaps 1000 = 1 second 
var delay = 8000;
var counter = 0;

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){
     document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2]; x.alt=alts[a[1]];
     // reset button class
     for(k=1; k<=imgs.length; k+=1) {
       var btn = document.getElementById('rbtn' + k); btn.setAttribute('class', 'btn_off');
     }
     // set button class
     var btn = document.getElementById('rbtn' + (a[1] + 1)); btn.setAttribute('class', 'btn_on');
     // set link
     var rlink = document.getElementById('rlink'); rlink.href = links[a[1]];
   }
}

function preloadImgs(){
  imgs = preloadImgs.arguments[0];
  links = preloadImgs.arguments[1];
  alts = preloadImgs.arguments[2];
  for(var i=0;i<imgs.length;i++){
    MM_preloadImages(imgs[i]);
  }
}

function randomImages(){
  var isIE = (navigator.appName=="Microsoft Internet Explorer");

  if(counter == (imgs.length)) counter = 0;

  if(isIE){
    document.images.rotator.style.filter="blendTrans(duration=2)";
    document.images.rotator.style.filter="blendTrans(duration=crossFadeDuration)";
    document.images.rotator.filters.blendTrans.Apply();
  }

  MM_swapImage('rotator', counter, imgs[counter++]);

  if(isIE){
    document.images.rotator.filters.blendTrans.Play()
  } else{
    fadeIn('rotator', 10);
  }

  setTimeout('randomImages()', delay);
}

function changeImage(index) {
  var isIE = (navigator.appName=="Microsoft Internet Explorer");

  if(isIE){
    document.images.rotator.style.filter="blendTrans(duration=2)";
    document.images.rotator.style.filter="blendTrans(duration=crossFadeDuration)";
    document.images.rotator.filters.blendTrans.Apply();
  }

  MM_swapImage('rotator', index-1, imgs[index-1]);

  if(isIE){
    document.images.rotator.filters.blendTrans.Play()
  } else{
    fadeIn('rotator', 10);
  }
}

function setOpacity(obj, opacity) {
  opacity = (opacity == 100)?99.999:opacity;
  
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";

  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;
  
  // Older Mozilla and Firefox
  obj.style.MozOpacity = opacity/100;
  
  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}

function fadeIn(objId,opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity <= 100) {
      setOpacity(obj, opacity);
      opacity += 10;
      window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
    }
  }
}

function isEmpty(o) {
  var o = {};
  for(var p in o) {
    if (o[p] != o.constructor.prototype[p])
      return false;
  }
  return true;
}