Date.prototype.isBusinessDays = function(jsData) {
	
	var Flg = false;

	var y = this.getFullYear();
	var m = (this.getMonth() + 1);
	if(m < 10){m = "0" + m;}
	var d = this.getDate();
	if(d < 10){d = "0" + d;}
	var y_m_d = y + '/' + m+ '/' + d;
	for(var i = 0;i < jsData.calender.length; i++){
			if(y_m_d == jsData.calender[i].Date){
				Flg =  jsData.calender[i].Class;
			}
	}
	return Flg;
}