function sendMail()
{
	var number = document.getElementById("nummer").value;
	var div_id = "anruf_answ";
	parameters ="nummer="+number;
	$.ajax({
		type: "POST",
		async: false,
		url: '/js/anrufmail.php',
		data: parameters,
		beforeSend: function() { 
						document.getElementById(div_id).style.display = 'none';
					},
		complete: 	function() { 
						document.getElementById(div_id).style.display = 'block';
					},
		success: 	function(data) {
						var div = document.getElementById(div_id);
						div.innerHTML = '<span style="color:#00AA00;">erfolgreich abgeschickt</span>';
					}
	});
}