/****************************************************************
"bretteleben.de JavaScript Slideshow" - Version 20081101
License: http://www.gnu.org/copyleft/gpl.html
Author: Andreas Berger
Copyright (c) 2008 Andreas Berger - andreas_berger@bretteleben.de
Project page and Demo at http://www.bretteleben.de
Last update: 2008-11-01
*****************************************************************/
//*****parameters to set*****
//into this array insert the paths of your pics.
//if there are only 2 images, set them two times i.e. 1/2/1/2
imges=new Array ('pic01.jpg', 'pic02.jpg', 'pic03.jpg', 'pic04.jpg');
divid="slideshow"; //the id of the div container that will hold the slideshow
picwid=320; //set this to the width of your widest pic
pichei=432; //... and this to the height of your highest pic
backgr="#ffffff"; //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
sdur=3; //time to show a pic between fades in seconds
fdur=1; //duration of the complete fade in seconds
steps=20; //steps to fade from on pic to the next
startwhen=1;
// "startwhen" leave it at "null" to start the function by calling it from your page by link
//(sample: <a href="javascript:myfade();">slide</a>)
// or set it to 1 to start the slide automatically as soon as the page is loaded
//*****nothing more to do, have fun :)
//starts with random picture: for(i=0;i<=Math.floor(Math.random()*imges.length);i++){imges.push(imges.shift());}
//****************************************************************
ftim=fdur*1000/steps;stim=sdur*1000;emax=imges.length;
tp="<div style='position:absolute;'>";
for(e=1;e<=emax;e++){
    theid="img"+e;thesrc=imges[e-1];
    tp=tp+"<div id='"+theid+"'><img src='"+thesrc+"' border='0'/></div>";
    }
tp=tp+"</div>";
document.write("<style type='text/css'>");
for(b=1;b<=emax;b++){
    thestylid="img"+b;thez=1;thevis='hidden';
    if(b<=1) {thez=2; thevis='visible';}
    document.write("#"+thestylid+" {position:absolute;left:0;top:0;width:"+picwid+"px;height:"+pichei+"px;background-color:"+backgr+";visibility:"+thevis+";z-index:"+thez+";}");
    }
document.write("</style>");
function myfade(){
    parr = new Array();
    for(a=1;a<=emax;a++){
        idakt="img"+a;paktidakt=document.getElementById(idakt);
    ie5exep=new Array(paktidakt);parr=parr.concat(ie5exep);}
        i=1;u=0;slide (i);
        }
function slide(numa){
    ptofade=parr[numa-1];
    if(numa<=emax){pnext=parr[numa];}
    if(numa==emax){pnext=parr[0];}
    pnext.style.visibility="visible";
    pnext.style.filter="Alpha(Opacity=100)";
    pnext.style.MozOpacity=1;
    pnext.style.opacity=1;
    ptofade.style.filter="Alpha(Opacity=100)";
    ptofade.style.MozOpacity=1;
    ptofade.style.opacity=1;
    factor=100/steps;
    slidenow();
    }
function slidenow(){
    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){window.setTimeout("slidenow()",ftim);}
    if(u>=steps&&i<emax){
        ptofade.style.visibility="hidden";
        ptofade.style.zIndex=1;
        pnext.style.zIndex=2;
        i=i+1;u=0;
        window.setTimeout("slide(i)",stim);}
    if(u>=steps&&i>=emax){
        ptofade.style.visibility="hidden";
        ptofade.style.zIndex=1;
        pnext.style.zIndex=2;
        i=1;u=0;
        window.setTimeout("slide(i)",stim);}
    }
function shownow(){
    document.getElementById(divid).innerHTML=tp;
    if(startwhen){window.setTimeout("myfade()",stim);}
    }
onload=shownow;