function printscreen() { 
	check = window.print;
	result = typeof(check);
	if(result != "undefined"){
		window.print();
	}
	else{
		window.alert("Macintoshをご利用の方はCommman+Pで印刷てください。");
	}
}

/*
function setDate() {
	var year = document.dateselector.year.value;
	var month = document.dateselector.month.value;
	var loc = location.href;
	var tMonth = month -1;
	var days = [31,28,31,30,31,30,31,31,30,31,30,31];
	var query = "&sYear="+year+"&sMonth="+month+"&sDay=1&eYear="+year+"&eMonth="+month+"&eDay="+days[tMonth];
	var locate = loc+query;
	location.href=locate;
}
*/

function initDate() {
	var now = new Date();
	var year = now.getFullYear() ;
	var month = now.getMonth() + 1;
	document.dateselector.year.value =year;
	document.dateselector.month.value = month;
}

function addEventToObject(oObj,sEvt,fFunc) {
	var oldhandler = oObj[sEvt];
	oObj[sEvt] = (typeof oObj[sEvt] != 'function') ? fFunc : function(){ oldhandler(); fFunc(); };
}