function CheckDate(INDate)
{ if(INDate=="")
    {return true;}
	subYY=INDate.substr(0,4)
	//转换月份
	if(INDate.indexOf('-',0)!=-1){	separate="-"}
	else{
		if(INDate.indexOf('/',0)!=-1){separate="/"}
		else {return true;}}
		area=INDate.indexOf(separate,0)
		subMM=INDate.substr(area+1,INDate.indexOf(separate,area+1)-(area+1))
		if(subMM.length<2){subMM="0"+subMM}
	//转换日
	area=INDate.lastIndexOf(separate)
	subDD=INDate.substr(area+1,INDate.length-area-1)
	if(eval(subDD)<10){subDD="0"+eval(subDD)}
	NewDate=subYY+"-"+subMM+"-"+subDD
	if(NewDate.length!=10){return true;}
    if(NewDate.substr(4,1)!="-"){return true;}
    if(NewDate.substr(7,1)!="-"){return true;}
	if(NewDate.substr(5,2)>"12"){return true;}
	if(NewDate.substr(8,2)>"31"){return true;}
   return false;}