function previousWeek(){
	// 向前翻 week
	//trace(currentTime);
	if(timerTransferDataList!=null){
		return false;
	}
	targetTime=new Date(currentTime.getTime()-stepWeek);
	changeTimeHandle(targetTime);
	return false;//不让链接跳转
}
function nextWeek(){
	// 向后翻 day
	if(timerTransferDataList!=null){
		return false;
	}
	targetTime=new Date(currentTime.getTime()+stepWeek);
	changeTimeHandle(targetTime);
	return false;//不让链接跳转
}
function previousDay(){
	// 向前翻 week
	//trace(currentTime);
	if(timerTransferDataList!=null){
		return false;
	}
	targetTime=new Date(currentTime.getTime()-stepDay);
	changeTimeHandle(targetTime);
	return false;//不让链接跳转
}
function nextDay(){
	// 向后翻 day
	if(timerTransferDataList!=null){
		return false;
	}
	targetTime=new Date(currentTime.getTime()+stepDay);
	changeTimeHandle(targetTime);
	return false;//不让链接跳转
}
function changeDayHandle(targetDay){
	if(timerTransferDataList!=null){
		return false;
	}
	targetTime=(new Date(currentTime.getTime())).setYMD(targetDay);//setYMD 中的M 是  真实月份，从1 开始
	changeTimeHandle(targetTime);
	return false;//不让链接跳转
}

function previousHour(){
	// 向前翻 hour
	if(timerTransferDataList!=null){
		return false;
	}
	//alert(2);
	targetTime=new Date(currentTime.getTime()-stepHour);
	//alert(stepHour)
	changeTimeHandle(targetTime);
	//alert(4);
	return false;//不让链接跳转
}
function nextHour(){
	// 向后翻 hour
	if(timerTransferDataList!=null){
		return false;
	}
	targetTime=new Date(currentTime.getTime()+stepHour);
	changeTimeHandle(targetTime);
	return false;//不让链接跳转
}
function changeHourHandle(targetHour){
	//target=[0 ~ 23] 执行明确给定的hour 数字
	if(isNaN(targetHour) || (timerTransferDataList!=null)){
		return false;
	}
	targetTime=new Date((new Date(currentTime)).setHours(targetHour));
	//alert(targetTime)
	changeTimeHandle(targetTime);
	return false;
}