function initEmpfehlen() {
	if (!document.getElementById('friend_name')
			|| !document.getElementById('you_name')) {
		return;
	}

	var friend = document.getElementById('friend_name');
	var you = document.getElementById('you_name');

	friend.onkeyup = function() {
		var span = document.getElementsByTagName('span');
		for (var i = 0; i < span.length; i++) {
			if (span[i].className == 'text_friend_name') {
				span[i].innerHTML = this.value;
			}
		}
	}
	you.onkeyup = function() {
		var span = document.getElementsByTagName('span');
		for (var i = 0; i < span.length; i++) {
			if (span[i].className == 'text_you_name') {
				span[i].innerHTML = this.value;
			}
		}
	}

}

addInitFunction(initEmpfehlen);