/*
	入力チェック
*/


function pressedChar(event) {
	var code = 0;
	if (event.charCode === 0) {	// Firefox, Safari control code
		code = 0;
	} else if (!event.keyCode && event.charCode) {	// Firefox
		code = event.charCode;
	} else if (event.keyCode && !event.charCode) {	// IE
		code = event.keyCode;
	} else if (event.keyCode == event.charCode) {	// Safari
		code = event.keyCode;
	}
	if (32 <= code && code <= 126) {	// ASCII文字の範囲内
		return String.fromCharCode(code);
	} else {
		return null;
	}
}
//数字のみ
function numberonly(event) {
	var char = pressedChar(event);
	if (char && !char.match(/\d/)) {
		return false;
	} else {
		return true;
	}
}
//英字のみ
function wordonly(event) {
	var char = pressedChar(event);
	if (char && !char.match(/\w/)) {
		return false;
	} else {
		return true;
	}
}