function changeImg(id,newsrc) {
	document.getElementById(id).src = newsrc;
}
function changeSize(size) {
	document.getElementById('size').value = size;
}
function toggledisplay(id, condition) {
	if (document.getElementById(condition).checked == true) {
		showlayer(id);
	} else {
		hidelayer(id);
	}
}
function showlayer(mylayer)
{
 document.getElementById(mylayer).style.display = 'block';
}

function hidelayer(mylayer)
{
 document.getElementById(mylayer).style.display = 'none';
}


function onloadFunction() {
	if(document.getElementById('lieferanschrift')) {
		toggledisplay('lieferanschrift','lieferadresse');
	}
}

// if the browser can deal with DOM, call the function onload		
if(document.getElementById && document.createTextNode) {
	window.onload=onloadFunction;
}