// JavaScript Document


//  var banner = 'bannerimg';
//	var banner_background = 'banner';
//	document.getElementById('bannerimg').style.backgroundImage = "url(style/banner/luft-1.jpg);";
//	document.getElementById('bannerimg').src = "./style/banner/luft-1.jpg";	
/*	
	switch(step)
	{
		case 1:
			setTimeout("fadeOut(100,'" + banner + "');", 2000);
			step++;
		break;
		case 2:
			swapbg(banner_background);
			step++;				
		break;
		case 3:
			setTimeout("fadeIn(0,'" + banner + "');", 2000);
			step = 1;	
		break;	
			
	}	
		 		
function swapbg(banner_background) {
	var a = 1 + (Math.random()*24);
	a = Math.round(a);
	if(a > 24){
		a=24;
	}
	if(document.getElementById(banner_background).style.backgroundImage != "url(style/banner/" + a + ".jpg)")
	{
		document.getElementById(banner_background).style.backgroundImage = "url(style/banner/" + a + ".jpg)";
	} else {
		swapbg(banner_background);
	}
}
function fadeOut(opacity, banner) {
	opacity -= 5;
	setOpacity(opacity, banner);
	if(opacity > 0)
	{
		setTimeout("fadeOut(" + opacity + ",'" + banner + "');", 5);
	}    
}
function fadeIn(opacity, banner) {
	opacity += 5;
	setOpacity(opacity, banner);
	if(opacity < 100)
	{
		setTimeout("fadeIn(" + opacity + ",'" + banner + "');", 5);
	} 
}
function setOpacity(opacity, id) {
	var img = document.getElementById(id).style;
	img.opacity = parseInt(opacity) / 100;
    img.MozOpacity = parseInt(opacity) / 100;
    img.KhtmlOpacity = parseInt(opacity) / 100;
    img.filter = "alpha(opacity=" + opacity + ")";	
}
	start(1);*/