/****************************************************************
"bretteleben.de JavaScript Slideshow" - Version 20100412
License: http://www.gnu.org/copyleft/gpl.html
Author: Andreas Berger
Copyright (c) 2010 Andreas Berger - andreas_berger@bretteleben.de
Project page and Demo at http://www.bretteleben.de
Last update: 2012-02-29 (modified by P. Osiak - http://www.vetmed.fu-berlin.de/einrichtungen/zentrale/bibliothek)
*****************************************************************/
//*****parameters to set*****
//into this array insert the paths of your pics.
var def_imges=['http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_01_warenkunde_seeigelrogen.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_02_campylobacter_microarray.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_03_vibrio_verhalten_in_muscheln.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_04_shrimp_zur_mikrobiol_analyse.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_05_sensorik_von_kochwuersten.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_06_stabilitaetspruefung_rohwuerste.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_07_probenvorbereitung_gefluegel.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_08_probenvorbereitung_muscheln.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_09_mikrobiolog_lebensmittelunters.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_10_laborarbeiten.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_11_kaviar_untersuchungen.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_12_institut_fuer_lebensmittelhyg.jpg',
'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we08/we08_13_dna_extraktion.jpg'];

var def_captions=['Warenkunde-Seeigelrogen',
'Campylobacter-Microarray',
'Vibrio-Verhalten in Muscheln',
'Shrimp zur mikrobiologischen Analyse',
'Sensorik von Kochwürsten',
'Stabilitätsprüfung Rohwürste',
'Probenvorbereitung Geflügel',
'Probenvorbereitung Muscheln',
'mikrobiologische Lebensmitteluntersuchung',
'Laborarbeiten im Institut',
'Kaviar-Untersuchungen',
'Institut für Lebensmittelhygiene',
'DNA-Extraktion aus Bakterien'];

var def_captions_en=['Commodities of Sea Urchin Roe',
'Campylobacter-Microarray',
'Behaviour of Vibrio in Mussels',
'Microbiological Analysis of Shrimps',
'Sensory Analysis of Pre-Cooked Sausages',
'Tests for Stability in Uncooked Sausages',
'Preparation of Poultry Samples',
'Preparation of Mussels',
'Microbiological Examination of Food',
'Working in the Lab',
'Examination of Caviar',
'Institute of Food Hygiene',
'DNA-Extraction from Bacteria'];
var def_divid="slideshow"; //the id of the div container that will hold the slideshow
var def_picwid=240; //set this to the width of your widest pic
var def_pichei=180; //... and this to the height of your highest pic
var def_contrbackgr="#99CC00"; // background color of the control panel
var def_backgr="#eeeeee"; //set this to the background color you want to use for the slide-area
//(for example the body-background-color) if your pics are of different size
var def_sdur=6; //time to show a pic between fades in seconds
var def_fdur=0.5; //duration of the complete fade in seconds
var def_steps=20; //steps to fade from on pic to the next
var def_startwhen="y"; //start automatically at pageload? set it to "y" for on and to "n" for off
var def_shuffle="n"; //start with random image? set it to "y" for on and to "n" for off
var def_showcontr="y"; //do you want to show controls? set it to "y" for on and to "n" for off
//into this array insert the paths of your control-buttons or the text to display e.g. back,start,stop,fwrd.
var def_contr=['http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we03/bwd.png', 'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we03/start.png', 'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we03/stop.png', 'http://www.vetmed.fu-berlin.de/einrichtungen/weprofil/we03/fwd.png'];
//****************************************************************

//daisychain onload-b
function daisychain(sl){if(window.onload) {var ld=window.onload;window.onload=function(){ld();sl();};}else{window.onload=function(){sl();};}}

function be_slideshow(be_en,be_slideid,be_imges,be_captions,be_divid,be_picwid,be_pichei,be_contrbackgr,be_backgr,be_sdur,be_fdur,be_steps,be_startwhen,be_shuffle,be_showcontr,be_contr){

//declarations and defaults
	var en=(be_en)?be_en:"false";
	var slideid=(be_slideid)?be_slideid:"0";
	var imges=(be_imges)?be_imges:def_imges;
	if (en == true) {
		var captions=(be_captions)?be_captions:def_captions_en;
	} else {
		var captions=(be_captions)?be_captions:def_captions;
	}
	var divid=(be_divid)?be_divid:def_divid;
	var picwid=(be_picwid)?be_picwid:def_picwid;
	var pichei=(be_pichei)?be_pichei:def_pichei;
	var contrbackgr=(be_contrbackgr)?be_contrbackgr:def_contrbackgr;
	var backgr=(be_backgr)?be_backgr:def_backgr;
	var sdur=(be_sdur)?be_sdur:def_sdur;
	var fdur=(be_fdur)?be_fdur:def_fdur;
	var steps=(be_steps)?be_steps:def_steps;
	var startwhen=(be_startwhen)?be_startwhen:def_startwhen;
			startwhen=(startwhen.toLowerCase()=="y")?1:0;
	var shuffle=(be_shuffle)?be_shuffle:def_shuffle;
			shuffle=(shuffle.toLowerCase()=="y")?1:0;
	var showcontr=(be_showcontr)?be_showcontr:def_showcontr;
			showcontr=(showcontr.toLowerCase()=="y")?1:0;
	var contr=(be_contr)?be_contr:def_contr;
	var ftim=fdur*1000/steps;
	var stim=sdur*1000;
	var emax=imges.length;
	var self = this;
	var stopit=1;
	var startim=1;
	var u=0;
	var parr = new Array();
	var ptofade,pnext,factor,mytimeout;
//check if there are at least 3 pictures, elswhere double the array
	if(imges.length<=2){imges=imges.concat(imges);}
//shuffle images if set
  if(shuffle){var i;for(i=0;i<=Math.floor(Math.random()*imges.length);i++){imges.push(imges.shift());}}
  
//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(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();
		}
	}
	
//prepare current and previous and trigger slide
	this.b_slideback = function(){
		clearTimeout(mytimeout);
		u=0;
		ptofade=parr[startim-1];
		if(startim==1){pprev=parr[emax-1];}
		else{pprev=parr[startim-2];}
		pprev.style.zIndex=1;
		pprev.style.visibility="visible";
		pprev.style.filter="Alpha(Opacity=100)";
		try{pprev.style.removeAttribute("filter");} catch(err){}
		pprev.style.MozOpacity=1;
		pprev.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(){
		document.getElementById("startbtn").style.display = 'inline';
		document.getElementById("stopbtn").style.display = 'none';
		stopit=1;
		clearTimeout(mytimeout);
		self.b_slide();
		
		ptofade=parr[startim-1];
			if(startim<emax){
				ptofade.style.visibility="hidden";
				ptofade.style.zIndex=1;
				pnext.style.zIndex=2;
				startim=startim+1;u=0;
				//mytimeout=setTimeout(function(){self.b_slide();},stim);
			}
			else{
				ptofade.style.visibility="hidden";
				ptofade.style.zIndex=1;
				pnext.style.zIndex=2;
				startim=1;u=0;
				//mytimeout=setTimeout(function(){self.b_slide();},stim);
			}
	}

//one step back
	this.b_back = function(){
		var pprev;
		document.getElementById("startbtn").style.display = 'inline';
		document.getElementById("stopbtn").style.display = 'none';
		stopit=1;
		clearTimeout(mytimeout);
		if(u==0){ //between two slides
			
			self.b_slideback();
			
			ptofade=parr[startim-1];
			if(startim==1){
				pprev = parr[emax-1];
				ptofade.style.visibility="hidden";
				ptofade.style.zIndex=1;
				pprev.style.zIndex=2;
				pprev.style.visibility="visible";
				startim=emax;u=0;
				mytimeout=setTimeout(function(){self.b_slide();},stim);
			}
			else{
				pprev = parr[startim-2];
				ptofade.style.visibility="hidden";
				ptofade.style.zIndex=1;
				pprev.style.zIndex=2;
				pprev.style.visibility="visible";
				startim=startim-1;u=0;
				mytimeout=setTimeout(function(){self.b_slide();},stim);
			}
		}
		else{ //whilst sliding
			self.b_slideback();
		}
	}

//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;
				mytimeout=setTimeout(function(){self.b_slide();},stim);
			}
			else{
				ptofade.style.visibility="hidden";
				ptofade.style.zIndex=1;
				pnext.style.zIndex=2;
				startim=1;u=0;
				mytimeout=setTimeout(function(){self.b_slide();},stim);
			}
		}
	}

//manual start
	this.b_start= function(){
		if(stopit==1){
 			stopit=0;
 			mytimeout=setTimeout(function(){self.b_slide();},stim);
			document.getElementById("startbtn").style.display = 'none';
			document.getElementById("stopbtn").style.display = 'inline';
 		}
	}

//manual stop
	this.b_stop= function(){
		clearTimeout(mytimeout);
		stopit=1;
		if(u > 0){this.b_slide();ptofade.style.zIndex=1;pnext.style.zIndex=2;startim++;}
		document.getElementById("startbtn").style.display = 'inline';
		document.getElementById("stopbtn").style.display = 'none';
	}

//insert css and images
	this.b_insert= function(){
		var b, thestylid, thez, thevis, slidehei;
		slidehei=(showcontr)?(pichei+26):(pichei); //add space for the controls
		var myhtml="<div style='position:absolute;width:"+picwid+"px;height:"+slidehei+"px;background-color:"+contrbackgr+";'>";
   			myhtml+="<div style='position:absolute;width:"+picwid+"px;height:"+pichei+"px;'>";
		for(b=1;b<=emax;b++){
			thez=1;thevis='hidden';
			if(b<=1) {thez=2; thevis='visible';}
			  myhtml+="<div id='img_"+slideid+"_"+b+"' style='margin:0;padding:0;text-align:center;visibility:"+thevis+";z-index:"+thez+";position:absolute;left:0;top:0;width:"+picwid+"px;height:"+pichei+"px;background-color:"+backgr+";'>";
				myhtml+="<img src='"+imges[(b-1)]+"' style='vertical-align:middle;border:0;width:"+picwid+"px;' alt=''/>";
				myhtml += "<div style='position:absolute;bottom:0;left:0;display:block;opacity:0.45;width:"+(picwid)+"px;height:40px;text-align:left;background-color:black;filter:alpha(opacity=45);'></div>";
				myhtml += "<div style='color:white;position:absolute;bottom:0;left:0;display:block;width:"+(picwid-32)+"px;height:26px;text-align:left;padding-left:16px;padding-right:16px;padding-top:7px;padding-bottom:7px'><p style='color: white;'>"+captions[(b-1)]+"</p></div>";
				myhtml += "<div style='line-height:26px;padding:0;height:26px;position:absolute;bottom:-26px;right:90px;display:block;'><p>"+b+"/"+emax+"</p></div>";
				myhtml += "</div>";
		}
   			myhtml+="</div>";
		
//show controls
		if(showcontr){
				for(b=1;b<=4;b++){
					var check=contr[b-1].substring(contr[b-1].length-3).toLowerCase(); //check for buttons
					contr[b-1]=(check=="jpg"||check=="gif"||check=="png")?("<img src='"+contr[b-1]+"' style='border:none;' alt=''/>"):(contr[b-1]);
				}
   			myhtml+="<div style='position:absolute;bottom:0;display:block;width:"+(picwid-16)+"px;padding-left:8px;padding-right:8px;'>";
			if(en == true) {
				myhtml+="<div style='float:left;'><strong>IMPRESSIONS</strong></div>";
			} else {
				myhtml+="<div style='float:left;'><strong>IMPRESSIONEN</strong></div>";
			}
			myhtml+="<div style='float:right;background-color:"+contrbackgr+";'>";
			myhtml+="<a href='javascript:be_"+slideid+".b_back();' style='text-decoration:none'>"+contr[0]+"</a>&nbsp;";
			myhtml+="<a href='javascript:be_"+slideid+".b_forw();' style='text-decoration:none'>"+contr[3]+"</a>&nbsp;";
   			myhtml+="<a id='startbtn' href='javascript:be_"+slideid+".b_start();' style='display:none;text-decoration:none'>"+contr[1]+"&nbsp;</a>";
   			myhtml+="<a id='stopbtn' href='javascript:be_"+slideid+".b_stop();' style='text-decoration:none'>"+contr[2]+"&nbsp;</a>";
			myhtml+="</div>";

		}
   			myhtml+="</div>";
		document.getElementById(divid).innerHTML=myhtml;
		self.b_myfade();
	}

//call autostart-function
daisychain(this.b_insert);
	
}

// Ueberpruefen ob in dem Script-Text "en" enthalten ist, falls ja, englische Version ausgeben
var scripts = document.getElementsByTagName('script');
var myScript = scripts[scripts.length - 1];

if (myScript.innerHTML.indexOf("en") != -1) {
	var be_0= new be_slideshow(true);
} else {
	var be_0= new be_slideshow();
}