function openpulldown(wert)
{
	document.getElementById(wert).style.display = 'block';
}

function closepulldown(wert)
{
	document.getElementById(wert).style.display = 'none';
}

function togglepulldown(wert)
{
	if(document.getElementById(wert).style.display=='none')
	{
		openpulldown(wert);
	}
	else
	{
		closepulldown(wert);
	}
}