// blend transition script by Jim Chestnutt
//
// can be set to run randomly or sequentially, with or without associated urls

// user definable variables
var randomActive = 0  // 0 for sequential, 1 for random
var urlActive = 0 // 0 for no url link, 1 for active
var Pic = new Array('images/tl1.jpg','images/tl2.jpg','images/tl3.jpg','images/tl4.jpg','images/tl5.jpg','images/tl6.jpg','images/tl7.jpg') // these are your images for the sequence
var Pic2 = new Array('images/tr1.jpg','images/tr2.jpg','images/tr3.jpg','images/tr4.jpg','images/tr5.jpg') // these are your images for the sequence
var Loc = new Array('#','#','#','#') // ensure both arrays are the same length if you intend to use url linking

var rotationSpeed = 5000
var fadeDuration = 50

var t
var imgRef = document.images
var j = 0
var j2 = 0
var p = Pic.length
var p2 = Pic2.length
var preLoad = new Array()
for (i = 0; i < p; i++){
   preLoad[i] = new Image()
   preLoad[i].src = Pic[i]
}
var preLoad2 = new Array()
for (i = 0; i < p2; i++){
   preLoad2[i] = new Image()
   preLoad2[i].src = Pic2[i]
}

// check the transition will run
function hasFilters(obj) {
	if(obj.filters && document.getElementById){
		return true;
	}
	else {
		return false;
	}
}

var x = document.images.length

function fadeSequence(){
if (document.images[x].complete){
   if (document.all && hasFilters(document.images['blend'])){
      imgRef.blend.style.filter='blendTrans(duration=2)'
      imgRef.blend.style.filter='blendTrans(duration=fadeDuration)'
      imgRef.blend.filters.blendTrans.Apply()   
      imgRef.blend2.style.filter='blendTrans(duration=2)'
      imgRef.blend2.style.filter='blendTrans(duration=fadeDuration)'
      imgRef.blend2.filters.blendTrans.Apply()     
   }
   if (randomActive == 1) {
	j = Math.floor (Math.random() * Pic.length)
	}
   imgRef.blend.src = preLoad[j].src
   imgRef.blend2.src = preLoad2[j2].src
   if (document.all && hasFilters(document.images['blend'])){
      imgRef.blend.filters.blendTrans.Play()
      imgRef.blend2.filters.blendTrans.Play()
   }
   urlActive == 1 ? currentLoc = Loc[j] : currentLoc = 'none';
   if (randomActive == 0) {
	j = j + 1
	j2 = j2 + 1
   	if (j > (p-1)) j=0
   	if (j2 > (p2-1)) j2=0
   }
}
   t = setTimeout('fadeSequence()', rotationSpeed)
}

function crLoc() {
	currentLoc == 'none' ? currentLoc == 'none' : window.location = currentLoc
}

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_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_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];}
}