function sprechzeiten(divId, click){
	if(click == true){
		var obj = document.getElementById ? document.getElementById(divId + '_b') : document.all ? document.all[divId + '_b'] : null;
		if(obj.style.display != 'block' || obj.style.display == ''){
				obj.style.display = 'block';
			}else{
				obj.style.display = 'none';
			}
	}else{
		document.getElementById(divId + '_a').style.cursor= "pointer";
		document.getElementById(divId + '_b').style.cursor= "pointer";
		document.getElementById(divId + '_c').style.cursor= "default";
	}
}