var sched = null;
function showSched(objId){
var obj = document.getElementById(objId);
	if(sched!=null){
		if(sched.id!=objId){
			sched.style.display="none";	
			obj.style.display="";
			sched = obj;
		}else
			sched.style.display=sched.style.display==""?"none":"";
	}else{
		obj.style.display="";
		sched = obj;
	}
}