var dom=(document.getElementById) //modern dom browsers
var iebrowser=document.all;


var aktiv;
var pos = 0;
var dir = 1;
var images = new Array();
var idx = 0;




//---------------------------------------------------
//
//---------------------------------------------------
function setOpacity(obj, value) {

  // fix Firefox bug, if opacity == 100
  var opacity = (value == 100) ? 99.999 : value;
  
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";
  
  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;
  
  // Older Mozilla and Firefox
  obj.style.MozOpacity = opacity/100;
  
  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}



//---------------------------------------------------
//
//---------------------------------------------------
function movePic (obj, ppos) {
   var angle = ppos/57;

   obj.style.left = (Math.round(420 * (Math.sin(angle)))) + "px";
   setOpacity(obj, ppos);
   if (ppos == 0) {
      idx = idx + 1;
      if (idx >= images.length) {
         idx = 0;
      }
      obj.style.background= 'url('+images[idx]+')';
   }
}




//---------------------------------------------------
//
//---------------------------------------------------
function movePics () {
   var pic0= document.getElementById("start_pic0");
   var pic1= document.getElementById("start_pic1");

   movePic(pic0, pos);
   movePic(pic1, 90-pos);
   pos = pos + 1*dir;
   if (pos >= 90) {
      dir = -1;
   }
   if (pos <= 0) {
      dir = 1;
   }
}



//---------------------------------------------------
//
//---------------------------------------------------
function Init() {
   images[0] = "images/start/startseite_photo1.jpg";
   images[1] = "images/start/startseite_photo2.jpg";
   images[2] = "images/start/startseite_photo3.jpg";

   aktiv = window.setInterval("movePics()", 70);
}


// -EOF-