var zaehlerZoom = 1.0;

function zoomIn() {
	zaehlerZoom *= 1.1;
	document.body.style.zoom = zaehlerZoom;
	document.body.style.MozTransform = "scale("+zaehlerZoom+")";
}

function zoomOut() {
	zaehlerZoom /= 1.1;
	document.body.style.zoom = zaehlerZoom;
	document.body.style.MozTransform = "scale("+zaehlerZoom+")";
}

function zoomReset() {
	zaehlerZoom = 1;
	document.body.style.zoom = zaehlerZoom;
	document.body.style.MozTransform = "scale("+zaehlerZoom+")";
}