// 日付の算出
function calcDate(){

	var txtMsg;
	var dateToday;
	var dateSpt;
	var dateDiff;

	dateToday = new Date();

	dateSpt = new Date(2010,08,11);

	dateDiff = (dateSpt.getTime()-dateToday.getTime())/(24*60*60*1000)

	txtMsg = Math.ceil(dateDiff)
	txtMsg += "日"

	outputLayer("txtResult",txtMsg);

}

// レイヤに文字を出力
function outputLayer(objName,strOut){ 

	if ( document.getElementById ){
		document.getElementById(objName).innerHTML = strOut
	}else if ( document.all ){
		document.all(objName).innerHTML = strOut
	}else if (document.layers){
		document[objName].document.open();
		document[objName].document.write(strOut);
		document[objName].document.close();
	}

}

window.onload=calcDate