function FrameAnimationLayerOverlay(obj)
{
	this.bbox=obj.bbox ? obj.bbox : {};
	this.size=obj.size ? obj.size : {};

	this.last=obj.last ? obj.last :  0;
	this.skew=obj.skew ? obj.skew :  0;
	this.wrap=obj.wrap ? obj.wrap : 10;
	this.name=obj.name ? obj.name : "";

	this.filter=1;
	this.adjust=1;
}

FrameAnimationLayerOverlay.prototype=new GOverlay();

FrameAnimationLayerOverlay.prototype.initialize = function(set) {
    this.set = set;
    this.div = document.createElement("DIV");
    this.div.style.position = "absolute";
    this.div.style.filter = "progid:DXImageTransform.Microsoft.Alpha(Opacity=40)";
    this.set.getPane(G_MAP_MAP_PANE).appendChild(this.div);

    for (var i = 0; this.wrap - i; i++) {
        var gif = document.createElement("IMG");

        gif.style.position = "absolute";
        gif.style.visibility = "hidden";
        gif.style.display = "none";

        gif.style.left = "0px";
        gif.style.top = "0px";
        gif.style.width = this.adjust ? "100%" : "";
        gif.style.height = this.adjust ? "100%" : "";

        gif.onload = this.loaded;
        gif.onerror = this.failed;

        gif.galleryImg = "no";

        this.div.appendChild(gif);
        this.div.style.filter = "progid:DXImageTransform.Microsoft.Alpha(Opacity=40)";
        this.div.style.opacity = .4;
    }
}

FrameAnimationLayerOverlay.prototype.remove=function()
{
	for (var i=0;this.wrap-i;i++)
	{
		var gif=this.div.childNodes[this.wrap-i-1];
		this.div.removeChild(gif);
	}
	this.set.getPane(G_MAP_MAP_PANE).removeChild(this.div);
}

FrameAnimationLayerOverlay.prototype.redraw = function(repair) {
    if (!repair) return

    var z0 = this.set.fromLatLngToDivPixel(new GLatLng(this.bbox.y0, this.bbox.x0));
    var z1 = this.set.fromLatLngToDivPixel(new GLatLng(this.bbox.y1, this.bbox.x1));

    if (this.adjust) {
        this.div.style.left = Math.min(z1.x, z0.x) + "px";
        this.div.style.top = Math.min(z1.y, z0.y) + "px";
        this.div.style.width = Math.abs(z1.x - z0.x) + "px";
        this.div.style.height = Math.abs(z1.y - z0.y) + "px";
    }

    else {
        this.div.style.left = (z1.x + z0.x - this.size.x) >> 1 + "px";
        this.div.style.top = (z1.y + z0.y - this.size.y) >> 1 + "px";
        this.div.style.width = this.size.x + "px";
        this.div.style.height = this.size.y + "px";
    }
}

FrameAnimationLayerOverlay.prototype.copy=function()
{
	return new FrameAnimationLayerOverlay({bbox:this.bbox,size:this.size,last:this.last,skew:this.skew,wrap:this.wrap,name:this.name});
}

FrameAnimationLayerOverlay.prototype.loaded=function(gif)
{
	gif=window.event ? window.event.srcElement : gif.currentTarget;

	gif.style.display="";

	gif.loaded=1;
	gif.failed=0;
}

FrameAnimationLayerOverlay.prototype.failed=function(gif)
{
	gif=window.event ? window.event.srcElement : gif.currentTarget;
	if (!gif.failed) gif.src=gif.src;
	gif.style.display="none";
	gif.loaded=0;
	gif.failed=1;
}

FrameAnimationLayerOverlay.prototype.hide=function()
{
	this.div.style.visibility="hidden";
}

FrameAnimationLayerOverlay.prototype.show = function() {
    this.div.style.visibility = "";
}

FrameAnimationLayerOverlay.prototype.opacity = function(filter) {
    this.filter = filter;
    
    if (document.all) {
        this.div.style.filter = "alpha(opacity=40)";
        if ((this.filter > 0) * (this.filter < 1)) {
            this.div.filters.alpha.opacity = Math.round(this.filter * 100);
            this.div.filters.alpha.enabled = 1;
        }
        else {
            this.div.filters.alpha.opacity = 100;
            this.div.filters.alpha.enabled = 0;
        }
    }
    else {
        if ((this.filter > 0) * (this.filter < 1)) {
            this.div.style.opacity = this.filter;
        }

        else {
            this.div.style.opacity = 1;
        }
    }
}

FrameAnimationLayerOverlay.prototype.rescale=function(adjust)
{
	this.adjust=adjust;

	for (var i=0;this.wrap-i;i++)
	{
		var gif=this.div.childNodes[i];

		gif.style.left  ="0px";
		gif.style.top   ="0px";
		gif.style.width =this.adjust ? "100%" : "";
		gif.style.height=this.adjust ? "100%" : "";
	}

	this.redraw(true);
}

FrameAnimationLayerOverlay.prototype.select=function(offset)
{
	offset=(this.skew+offset)%this.wrap;

	var gif=this.div.childNodes[offset];

	if (gif.loaded) this.div.childNodes[this.last].style.visibility="hidden";
	if (gif.loaded) this.last=offset;
	if (gif.loaded) this.div.childNodes[this.last].style.visibility="";

	return this.div.childNodes[this.last].src;
}

FrameAnimationLayerOverlay.prototype.feed=function(recall)
{
	var div=document.getElementById("("+this.name+")");
	if (div) document.body.removeChild(div);
	div=document.createElement("SCRIPT");
	if (div) document.body.appendChild(div);
	div.src=recall+"&random="+(""+Math.random().toFixed(10)+"").slice(-10);
	div.id="("+this.name+")";
}

FrameAnimationLayerOverlay.prototype.reload=function(recall)
{
	var gif,src;
	var set=[0,0];
	for (var i=0;recall[i];i++)
	{
		src=recall[i];
		if (gif=this.div.childNodes[(this.skew+i+0)%this.wrap]) set[0]+=gif.loaded*(gif.src==src);
		if (gif=this.div.childNodes[(this.skew+i+1)%this.wrap]) set[1]+=gif.loaded*(gif.src==src);
	}

	if ((set[0]==(i-0))*(set[1]==0))
	{
		return;
	}

	if ((set[0]==0)*(set[1]==(i-1)))
	{
		gif=this.div.childNodes[(this.skew+0)%this.wrap];
		this.skew=(this.skew+1)%this.wrap;

//		this.div.removeChild(gif);
//		this.div.appendChild(gif);

		gif.style.display="none";
		gif.loaded=0;
		gif.failed=0;
		gif.src=src;
		return;
	}

	for (var i=0;recall[i];i++)
	{
		src=recall[i];
		gif=this.div.childNodes[(this.skew+i)%this.wrap];
		gif.style.display="none";
		gif.loaded=0;
		gif.failed=0;
		gif.src=src;
	}
}