var waiting = 4000;
var fade_waiting = 30;
var interval = 5;
var counter = 1;
var position = 0;
var parts = new Array("gazi","produkte","sport","engagement");
var part1;
var part2;

function slide() {
	window.setTimeout("showHide()",waiting);
}
function showHide() {
	var part = parts[position];
	part1 = part;
	document.getElementById('inhalt_'+part).style['display']='none';
	document.getElementById(part).style['display']="block";
	document.getElementById(part+'_bg').style['display']="block";
	position++;
	if (position>=parts.length) {
		position=0;
	}
	part = parts[position];
	part2 = part;
	document.getElementById('inhalt_'+part).style['display']='block';
	document.getElementById(part).style['display']="none";
	document.getElementById(part+'_bg').style['display']="none";
	fadeImages();
	slide();
}
function fadeImages() {
	//alert(document.getElementById('img_'+part1).style['opacity']);
	//alert(document.getElementById('img_'+part2).style['opacity']);
	
	var value = interval / 100 * counter; 
	var value2 = interval * counter;
	var op = 1 - value;
	var op2 = 0 + value;
	var op_ie = 100 - value2;
	var op_ie2 = 0 + value2;
	if (op > 0) {
		//alert(op2 + ' ' + 'img_'+part2);
		counter ++;
		document.getElementById('img_'+part1).style['opacity'] = op;
		document.getElementById('img_'+part1).style['filter'] = "alpha(opacity="+op_ie+")";
		document.getElementById('img_'+part2).style['display'] = "inline";
		document.getElementById('img_'+part2).style['opacity'] = op2;
		document.getElementById('img_'+part2).style['filter'] = "alpha(opacity="+op_ie2+")";
		window.setTimeout("fadeImages()",fade_waiting);	
	}
	else {
		document.getElementById('img_'+part1).style['display'] = "none";
		//document.getElementById('img_'+part2).style['display'] = "inline";
		counter = 1;
	}
	//document.getElementById('img_'+part2).style['opacity'] = 0 + value;	
}