var keybYN = new keybEdit('yn','Valid values are \'Y\' or \'N\'.');
var keybNumeric = new keybEdit('.01234567890','Numbers and Radix-Point input only.');
var keybAlpha = new keybEdit('abcdefghijklmnopqurstuvwxy ','Alpha input only.');
var keybAlphaNumeric = new keybEdit('abcdefghijklmnopqurstuvwxy01234567890 ','Alpha-numeric input only.');
var keybDecimal = new keybEdit('01234567890.','Decimal input only.');
var keybDate =  new keybEdit('01234567890/','Date input only');;
var keybYNNM = new keybEdit('yn');
var keybNumericExtend = new keybEdit('01234567890-','只能输入数字和“-”连接符！');
var keybAlphaNM = new keybEdit('abcdefghijklmnopqurstuvwxy');
var keybAlphaNumericNM = new keybEdit('abcdefghijklmnopqurstuvwxy01234567890');
var keybDecimalNM = new keybEdit('01234567890.');
var keybDateNM = new keybEdit('01234567890/');;

function keybEdit(strValid, strMsg) {
	var reWork = new RegExp('[a-z]','gi');		//	Regular expression\
	//	Properties
	if(reWork.test(strValid))
		this.valid = strValid.toLowerCase() + strValid.toUpperCase();
	else
		this.valid = strValid;
	if((strMsg == null) || (typeof(strMsg) == 'undefined'))
		this.message = '';
	else
		this.message = strMsg;
	//	Methods
	this.getValid = keybEditGetValid;
	this.getMessage = keybEditGetMessage;
	
	function keybEditGetValid() {
		return this.valid.toString();
	}
	
	function keybEditGetMessage() {
	
		return this.message;
	}
}
//
void function editKeyBoard(objForm, objKeyb) {
	strWork = objKeyb.getValid();
	strMsg = '';							// Error message
	blnValidChar = false;					// Valid character flag
	if(!blnValidChar)
		for(i=0;i < strWork.length;i++)
			if(window.event.keyCode == strWork.charCodeAt(i)) {
				blnValidChar = true;
				break;
			}
	if(!blnValidChar) {
		if(objKeyb.getMessage().toString().length != 0)
			alert('Error: ' + objKeyb.getMessage());
			window.event.returnValue = false;		// Clear invalid character
			objForm.focus();						// Set focus
	}
}