function getHeaderImgPos(btn)
{
	slide = null;
	switch(btn)
	{
		case "home":
			slide = '0px';
		break;
		
		case "agb":
			slide = '0px';
		break;	
		
		case "leistungen":
			slide = '-510px';
		break;
		
		case "team":
			slide = '-1020px';
		break;
		
		case "kontakt":
			slide = '-1530px';
		break;		
		
		case "aktionen":
			slide = '-2040px';
		break;
		
		case "referenzen":
			slide = '-2550px';
		break;
		
		case "philosophie":
			slide = '-3060px';
		break;
	}
	return slide;
}

function swapHeaderImg(onOff, activeBtn, selBtn)
{
	switch(onOff)
	{
		case "on":
			getHeaderImgPos(activeBtn);
			document.getElementById('menuImg').style.backgroundPosition = slide;
		break;		
		
		case "off":
			getHeaderImgPos(selBtn);
			document.getElementById('menuImg').style.backgroundPosition = slide;
		break;
	}
}

function checkInput()
{
	error = false;
	errortext = "";
	
	if(document.getElementById('aktionsheader').value == "")
	{
		error = true;
		errortext = "FEHLER: Aktionsüberschrift fehlt!\n";
	}
	
	if(document.getElementById('aktionstext').value == "")
	{
		error = true;
		errortext += "FEHLER Aktionstext fehlt!\n";
	}

	if(document.getElementById('aktionsbild').checked)
	{
		if(document.getElementById('picUp').value == "")
		{
			error = true;
			errortext += "FEHLER Bildpfad fehlt!\n";
		}
	}
	
	if(document.getElementById('dateOn').checked)
	{
		if(document.getElementById('setOnDay').value == "" || document.getElementById('setOnMonth').value == "" || document.getElementById('setOnYear').value == "")
		{
			error = true;
			errortext += "FEHLER Onlinedatum fehlt!\n";
		}
	}
	
	if(document.getElementById('dateOff').checked)
	{
		if(document.getElementById('setOffDay').value == "" || document.getElementById('setOffMonth').value == "" || document.getElementById('setOffYear').value == "")
		{
			error = true;
			errortext += "FEHLER Offlinedatum fehlt!\n";
		}
	}
	
	if(error)
	{
		alert(errortext);
		errortext = "";
		return false;
	}
	else
	{
		return true;
	}
}

function showInput(clickedID, showID)
{
	if(document.getElementById(clickedID).checked)
	{
		document.getElementById(showID).style.display = 'block';
	}
	else
	{
		document.getElementById(showID).style.display = 'none';
	}
}

function resetFormFields()
{
		var formFields = new Array('picUp', 'setOnDate', 'setOffDate');
		for(var i = 0; i<formFields.length; i++)
		{
			document.getElementById(formFields[i]).style.display = 'none';
		}
}