var anzahlBilderBackground = 10;

var i = 0;
var k = 0;
var bOpen = 0;
var iHeight = 252;
var aktiv;
var aktiv1;

function moveNaviFirstLevel() 
{
if(i < iHeight && bOpen == 0) 
  { 
   document.getElementById("naviFirstLevel").style.top = - i +"px";
   i = i + 10;
   if (i >= iHeight) { bOpen = 1; return; } else { aktiv = window.setTimeout("moveNaviFirstLevel()",50); }
  }
};


function fadeBackground()
{
	if (i <=90) { 
		i=i+10;
		if (navigator.appName == "Microsoft Internet Explorer") {
			// IE
			document.getElementById('imageOnTop').style.filter = "Alpha(opacity="+(100-i)+")";
			document.getElementById('imageInBackground').style.filter = "Alpha(opacity="+(i)+")";
		} else {
			// Mozilla
			document.getElementById('imageOnTop').style.opacity = (1-(i/100));
			document.getElementById('imageInBackground').style.opacity = i/100;
		}
		
		aktiv = window.setTimeout("fadeBackground()",5);
	} else {
		
		document.getElementById('imageOnTop').style.backgroundImage = document.getElementById('imageInBackground').style.backgroundImage;
		
		if (navigator.appName == "Microsoft Internet Explorer") {
		// IE	
			document.getElementById('imageOnTop').style.filter = "Alpha(opacity=100)";
			document.getElementById('imageInBackground').style.filter = "Alpha(opacity=0)";
		} else {
			// Mozilla
			document.getElementById('imageOnTop').style.opacity = 1;
			document.getElementById('imageInBackground').style.opacity = 0;
		}
		if (k== (anzahlBilderBackground-1)) {	k=0; } else { k++; }
		
		document.getElementById('imageInBackground').style.backgroundImage = "url(style/img/background"+k+".jpg)";
		aktiv = window.setTimeout("fadeBackground()",5000);
		i=0;
	}

};

function stopFadingBackground()
{
	window.clearTimeout(aktiv);
};

function naviClick(iHeight,iTop)
{
  if(i < iHeight && bOpen == 0) 
  { 
   document.getElementById("naviBack").style.top = (iTop+i) +"px";
   i = i + 10;
   if (i >= iHeight) { bOpen = 1; return; } else { aktiv1 = window.setTimeout("naviClick(252,100)",50); }
  }

}