function getDateFormat(obj, full_year){
    var str = "";
    if(full_year == undefined || full_year == true){
    	str += obj.getFullYear()+"/";
	}else{
		var year_str = obj.getFullYear()+"";
		str += year_str.substr(2, 2)+"/";
	}
    str += setDateZero(obj.getMonth()+1)+"/";
    str += setDateZero(obj.getDate());
    return str;
}
function getDateTimeFormat(obj, full_year){
    var str = "";
    if(full_year == undefined || full_year == true){
    	str += obj.getFullYear()+"/";
	}else{
		var year_str = obj.getFullYear()+"";
		str += year_str.substr(2, 2)+"/";
	}
    str += setDateZero(obj.getMonth()+1)+"/";
    str += setDateZero(obj.getDate())+" ";
    str += setDateZero(obj.getHours())+":";
    str += setDateZero(obj.getMinutes());
    return str;
}
function setDateZero(num){
    return ((num < 10) ? "0":"")+num;
}