var active_header = 1;

function showNextHeader2()
{
	switch(active_header) {
		case 1:
			document.getElementById('headpic1').src = "pics/Intro1_klein.jpg";
			document.getElementById('headpic2').src = "pics/Intro2_klein.jpg";
			document.getElementById('headpic3').src = "pics/Intro3_klein.jpg";
			document.getElementById('headpic4').src = "pics/Intro4_klein.jpg";
			document.getElementById('headpic5').src = "pics/Intro5_klein.jpg";
			active_header = 2;
			break;
		case 2:
			document.getElementById('headpic1').src = "pics/Intro7_klein.jpg";
			document.getElementById('headpic2').src = "pics/Intro8_klein.jpg";
			document.getElementById('headpic3').src = "pics/Intro6_klein.jpg";
			document.getElementById('headpic4').src = "pics/Intro9_klein.jpg";
			document.getElementById('headpic5').src = "pics/Intro10_klein.jpg";
			active_header = 1;
			break;
	}
	
	setTimeout("showNextHeader2()",5000);
}

function showNextHeader()
{
	switch(active_header) {
		case 1:
			document.getElementById('headpic1').src = "pics/Intro1_klein.jpg";
			document.getElementById('headpic2').src = "pics/Intro2_klein.jpg";
			active_header = 2;
			break;
		case 2:
			document.getElementById('headpic1').src = "pics/Intro3_klein.jpg";
			document.getElementById('headpic2').src = "pics/Intro4_klein.jpg";
			active_header = 3;
			break;
		case 3:
			document.getElementById('headpic1').src = "pics/Intro5_klein.jpg";
			document.getElementById('headpic2').src = "pics/Intro6_klein.jpg";
			active_header = 4;
			break;
		case 4:
			document.getElementById('headpic1').src = "pics/Intro7_klein.jpg";
			document.getElementById('headpic2').src = "pics/Intro8_klein.jpg";
			active_header = 5;
			break;
		case 5:
			document.getElementById('headpic1').src = "pics/Intro9_klein.jpg";
			document.getElementById('headpic2').src = "pics/Intro10_klein.jpg";
			active_header = 1;
			break;
	}
	
	setTimeout("showNextHeader()",5000);
}

function setDisplay(id, img)
{
	var display = document.getElementById(id).style.display;
	var img = document.getElementById(img);
	
	if (display == "block")
	{
		hide(id);
		img.src = "pics/plus.gif";
		img.alt = "aufklappen";
	}
	else
	{
		show(id);
		img.src = "pics/minus.gif";
		img.alt = "zuklappen";
	}
}

function show(id)
{
	document.getElementById(id).style.display = "block";
}

function hide(id)
{
	document.getElementById(id).style.display = "none";
}

function setFocus(id)
{
	document.getElementById(id).focus();
}

function setSelect(id)
{
	document.getElementById(id).select();
}