function hersteller_select()
{
	if(document.getElementById('geraeteauswahl').selectedIndex > 0)
		document.getElementById("geraet_waehlen").disabled = false;
	else
		document.getElementById("geraet_waehlen").disabled = true;
	document.getElementById('geraet_waehlen').selectedIndex = 0;
	modell_select();
	paket_select();
	bg_select();
}
function modell_select()
{
	if(document.getElementById('geraet_waehlen').selectedIndex > 0)
		document.getElementById("paketart_waehlen").disabled = false;
	else
		document.getElementById("paketart_waehlen").disabled = true;
	document.getElementById('paketart_waehlen').selectedIndex = 0;
	paket_select();
}
function paket_select()
{
	if(document.getElementById('paketart_waehlen').selectedIndex > 0)
		document.getElementById("ZumAntrag").disabled = false;
	else
		document.getElementById("ZumAntrag").disabled = true;
}
function bg_select()
{
	if(document.getElementById("geraeteauswahl").options[document.getElementById("geraeteauswahl").selectedIndex].value != 'Gerät nicht gefunden')
		document.getElementById("select_bg").className='select_geraete select_bg_klein';
	else
		document.getElementById("select_bg").className='select_geraete select_bg_gross';
}