function input_number()	{
	if ((event.keyCode < 48) || (event.keyCode > 57))
		event.returnValue = false;
}

function input_money()	{
	if (((event.keyCode < 48) || (event.keyCode > 57)) && (event.keyCode != 46))
		event.returnValue = false;
}

function input_minus_money()	{
	if (((event.keyCode < 48) || (event.keyCode > 57)) && (event.keyCode != 46) && (event.keyCode != 45))
		event.returnValue = false;
}

function input_phone()	{
	if (((event.keyCode < 48) || (event.keyCode > 57)) && (event.keyCode != 45))
		event.returnValue = false;
}

function MaskPhon(obj) { 
	obj.value =  PhonNumStr( obj.value ); 
} 

function PhonNumStr( str ){ 
	var RegNotNum  = /[^0-9]/g; 
	var RegPhonNum = ""; 
	var DataForm   = ""; 

	if( str == "" || str == null ) return ""; 

	str = str.replace(RegNotNum,''); 

	if( str.length < 4 ) return str; 

	if( str.length > 3 && str.length < 7 ) { 
		DataForm = "$1-$2"; 
		RegPhonNum = /([0-9]{3})([0-9]+)/; 
	} else if(str.length >= 7){ 
		DataForm = "$1-$2-$3"; 
		RegPhonNum = /([0-9]{3})([0-9]{3})([0-9]+)/; 
	} 

	while( RegPhonNum.test(str) ) {  
		str = str.replace(RegPhonNum, DataForm);  
	} 

	return str; 
}