// JavaScript Document

plfmSlideshow.prototype.transport = function(action){
	switch(action){
		case("pause"):
			return(clearTimeout(this.to));
		case("rw"):
			return(this.changeSlide(this.topSlideIndex - 1));
		case("ff"):
			return(this.changeSlide(this.bottomSlideIndex));
	}
}
plfmSlideshow.prototype.slideShowRedirect = function(){
	if(this.clickArray[this.topSlideIndex]!=""){
		if(this.targetArray[this.topSlideIndex] == "_blank"){
			window.open(this.clickArray[this.topSlideIndex]);
		}else{
			document.location.href= this.clickArray[this.topSlideIndex];
		}
	}
}

plfmSlideshow.prototype.fadeChange = function(){
	this.upwardOpacity = this.upwardOpacity + .02;
	this.downwardOpacity = this.downwardOpacity - .02;

	if(null!=this.bottomSlide.style.filter){
		eval("this.bottomSlide.style.filter = \"Alpha(Opacity=" + this.upwardOpacity*100 +")\";");
		eval("this.topSlide.style.filter = \"Alpha(Opacity=" + this.downwardOpacity*100 +")\";");
	}
	if(null!=this.bottomSlide.style.opacity){
		this.bottomSlide.style.opacity = this.upwardOpacity;
		this.topSlide.style.opacity = this.downwardOpacity;
	}
	
	if(null!=this.bottomSlide.style.MozOpacity){
		this.bottomSlide.style.MozOpacity=this.upwardOpacity;
		this.topSlide.style.MozOpacity=this.downwardOpacity;
	}
	if(this.holdOnSlide == 1){
		this.holdOnSlide = 0;
		this.to = setTimeout(this.obj + ".fadeChange();",this.showSeconds);
	}else if(this.upwardOpacity>1.0){
		this.changeSlide(this.bottomSlideIndex);
	}else{
		this.to = setTimeout(this.obj + ".fadeChange();",15);
	}
}

plfmSlideshow.prototype.thumbHilighting = function(direction,tid){
	null == tid ? tid = this.topSlideIndex : 1;
	if(!dge(this.baseDiv + "t" + tid)){
		return;
	}
	var obj = dge(this.baseDiv + "t" + tid);
	if(direction == 1){
		obj.style.color = this.bc;
		obj.style.backgroundColor = this.fc;
	}else{
		obj.style.color = this.fc;
		obj.style.backgroundColor = this.bc;
	}

}
plfmSlideshow.prototype.changeSlide = function(newTopSlideIndex){
	clearTimeout(this.to);
	if(null!=this.topSlideIndex){
		this.thumbHilighting(-1);
	}
	newTopSlideIndex == (this.numSlides - 1) ? this.bottomSlideIndex = 0 : this.bottomSlideIndex = newTopSlideIndex + 1;
	this.topSlideIndex = newTopSlideIndex;
	this.thumbHilighting(1);
	this.topSlide.innerHTML = this.contents[this.topSlideIndex];
	this.topSlide.style.opacity = 1.0;	
	if(null!=this.bottomSlide.style.filter){
		this.topSlide.style.filter = "Alpha(Opacity=100);";
	}
	this.bottomSlide.innerHTML = this.contents[this.bottomSlideIndex];
	this.bottomSlide.style.opacity = 0;
	this.upwardOpacity = 0.0;
	this.downwardOpacity = 1.00;
	this.holdOnSlide = 1;
	this.fadeChange();
}

plfmSlideshow.prototype.loadContent = function(){
	var lastSlide = this.baseDiv + "s" + (this.numSlides - 1);
	if(dge(lastSlide)){
		for(var i=0;i<this.numSlides;i++){
			this.contents[i] = document.getElementById(this.baseDiv + "s" + i).innerHTML;
		}
		this.changeSlide(0);
	}else{
		var t = setTimeout(this.obj + ".loadContent();",1000);
	}

}
plfmSlideshow.prototype.init = function(){
	if(!dge(this.topSlideID)){
		var t = setTimeout(this.obj + ".init();",1000);
	}else{
		this.bottomSlide = dge(this.bottomSlideID);
		this.topSlide = dge(this.topSlideID);
		this.loadContent();
	}
}
function plfmSlideshow(divID,numSlides,showSeconds){
	this.showSeconds = showSeconds;
	this.obj = "plfmSlideObj_" + divID;
	this.baseDiv = divID;
	this.topSlideID = divID + "_topslide";
	this.bottomSlideID = divID + "_bottomslide";
	this.numSlides = numSlides;
	this.current = 0;
	this.next = 1;
	this.contents = new Array();
	this.clickArray = new Array();
	this.targetArray = new Array();
	this.init();
		
}