/*

// "Simple Picture Slideshow" Plugin for Joomla 1.6 - Version 1.5.5

// License: GNU General Public License version 2 or later; see LICENSE.txt

// Author: Andreas Berger - andreas_berger@bretteleben.de

// Copyright (C) 2011 Andreas Berger - http://www.bretteleben.de. All rights reserved.

// Project page and Demo at http://www.bretteleben.de

// ***Last update: 2011-01-11***

*/



function besps_slideshow(besps_slideid,besps_ftim,besps_stim,besps_steps,besps_startwhen,besps_emax,besps_caps,besps_preload){



//declarations

	var self = this;

	var slideid=besps_slideid;

	var ftim=besps_ftim;

	var stim=besps_stim;

	var steps=besps_steps;

	var startwhen=besps_startwhen;

	var emax=besps_emax;

	var preload=besps_preload;

	var stopit=1;

	var startim=1;

	var u=0;

	var parr = new Array();

	var ptofade,pnext,factor,mytimeout;

  var caps=besps_caps;



//daisychain onload-events

this.be_daisychain=function(sl){

	if(window.addEventListener){

		window.addEventListener('load',sl,false);

		}

	else if(window.attachEvent){

		window.attachEvent('onload',sl);

		}

	else{

		if(window.onload){

			var ld=window.onload;

			window.onload=function(){ld();sl();};

			}

		else{

			window.onload=sl;

			}

		}

	};



//push images into array and get things going

	this.b_myfade = function(){

		var a,idakt,paktidakt,ie5exep;

		for(a=1;a<=emax;a++){

			idakt="img_"+slideid+"_"+a;paktidakt=document.getElementById(idakt);

    	ie5exep=new Array(paktidakt);parr=parr.concat(ie5exep);

    if(preload&&a==emax){

    	setTimeout(function(){self.b_preload();},10);

    }

    }

		if(startwhen){

			stopit=0;

 			mytimeout=setTimeout(function(){self.b_slide();},stim);

 		}

	}



//prepare current and next and trigger slide

	this.b_slide = function(){

		clearTimeout(mytimeout);

		u=0;

		ptofade=parr[startim-1];

		if(startim<emax){pnext=parr[startim];}

		else{pnext=parr[0];}

		pnext.style.zIndex=1;

		pnext.style.visibility="visible";

		pnext.style.filter="Alpha(Opacity=100)";

		try{pnext.style.removeAttribute("filter");} catch(err){}

		pnext.style.MozOpacity=1;

		pnext.style.opacity=1;

		ptofade.style.zIndex=2;

		ptofade.style.visibility="visible";

		ptofade.style.filter="Alpha(Opacity=100)";

		ptofade.style.MozOpacity=1;

		ptofade.style.opacity=1;

		factor=100/steps;

		if(stopit=="0"){

			this.b_slidenow();

		}

	}



//one step forward

	this.b_forw = function(){

		stopit=1;

		clearTimeout(mytimeout);

		ptofade=parr[startim-1];

		if(startim<emax){pnext=parr[startim];startim=startim+1;}

		else{pnext=parr[0];startim=1;}

		ptofade.style.visibility="hidden";

		ptofade.style.zIndex=1;

		pnext.style.visibility="visible";

		pnext.style.zIndex=2;

		this.b_switchcap();

		self.b_slide();

		//counter

		self.setCurrentNumber();

	}



//one step back

	this.b_back = function(){

		stopit=1;

		clearTimeout(mytimeout);

		if(u==0){ //between two slides

			ptofade=parr[startim-1];

			if(startim<emax){pnext=parr[startim];}

			else{pnext=parr[0];}

			pnext.style.visibility="hidden";

			ptofade.style.zIndex=1;

			ptofade.style.visibility="visible";

			if(startim>=2){startim=startim-1;}

			else{startim=emax;}

			this.b_switchcap();

			self.b_slide();

		}

		else{ //whilst sliding

			this.b_switchcap();

			self.b_slide();

		}

		//counter

		self.setCurrentNumber();

	}



//slide as said, then give back

	this.b_slidenow = function(){

		var check1,maxalpha,curralpha;

		check1=ptofade.style.MozOpacity;

		maxalpha=(100-factor*u)/100*105;

		if(check1<=maxalpha/100){u=u+1;}

		curralpha=100-factor*u;

		ptofade.style.filter="Alpha(Opacity="+curralpha+")";

		ptofade.style.MozOpacity=curralpha/100;

		ptofade.style.opacity=curralpha/100;

		if(u<steps){ //slide not finished

			if(stopit=="0"){mytimeout=setTimeout(function(){self.b_slidenow();},ftim);}

			else {this.b_slide();}

		}

		else{ //slide finished

			if(startim<emax){

				ptofade.style.visibility="hidden";

				ptofade.style.zIndex=1;

				pnext.style.zIndex=2;

				startim=startim+1;u=0;

				this.b_switchcap();

				mytimeout=setTimeout(function(){self.b_slide();},stim);

			}

			else{

				ptofade.style.visibility="hidden";

				ptofade.style.zIndex=1;

				pnext.style.zIndex=2;

				startim=1;u=0;

				this.b_switchcap();

				mytimeout=setTimeout(function(){self.b_slide();},stim);

			}

		}

		//counter

		self.setCurrentNumber();

	}



//manual start

	this.b_start= function(){

		if(stopit==1){

 			stopit=0;

			this.b_switchcap();

 			mytimeout=setTimeout(function(){self.b_slide();},stim);

 		}

	}



//manual stop

	this.b_stop= function(){

		clearTimeout(mytimeout);

		stopit=1;

			this.b_switchcap();

		this.b_slide();

	}



//preload

	this.b_preload= function(){

		var arrdelta,tempsrc,j;

		if(preload&&preload.length>=1){

			for (j=0;j<preload.length;j++){

				arrdelta=(emax-preload.length+j)*1;

				tempsrc=parr[arrdelta].getElementsByTagName("img")[0].src.toString();

				parr[arrdelta].getElementsByTagName("img")[0].src=tempsrc.replace(/\/plugins\/content\/plugin_besps\/besps.png$/g, preload[j]);

			}

		}

	}



//switch captions

	this.b_switchcap = function(){

		if(caps!="NOCAPS"&&caps.length>=1){

			document.getElementById("bs_caps_"+besps_slideid).getElementsByTagName("div")[0].innerHTML=(caps[startim-1][0]!=""||caps[startim-1][1]!="")?"<span>"+caps[startim-1][0]+"</span><span>"+caps[startim-1][1]+"</span>":"&nbsp;";

		}

}



//counter

	this.setCurrentNumber= function(){

		if(document.getElementById("besps_counter_"+besps_slideid)){

			var actim=startim;

			var lastim=emax;

			//capture doubled arrays

			if(parr.length==4&&parr[1].getElementsByTagName("img")[0].src==parr[3].getElementsByTagName("img")[0].src){

				lastim=2;

				actim-=(actim>=3)?2:0;

				}

			if(emax>=10){actim=(actim<=9)?('0'+actim):(actim);}

			if(emax>=100){actim=(actim<=99)?('0'+actim):(actim);}

			document.getElementById("besps_counter_"+besps_slideid).innerHTML=actim+"/"+lastim;

		}

}



//call autostart-function

	this.be_daisychain(this.b_myfade);



}