function restrictCurrency(e) {
   return restrictInput(e,'0123456789.');
}

function restrictZip(e){
	return restrictInput(e,'0123456789-');
}

function restrictCreditCardNo(e){
	return restrictInput(e,'0123456789');
}

function restrictNumber(e){
	return restrictInput(e,'0123456789');
}

function restrictEIN(e){
	return restrictInput(e,'0123456789');
}

// copyright 1999 Idocs, Inc. http://www.idocs.com
// Distribute this script freely but keep this notice in place
function restrictInput(e, allowedChars) {

	var key;
	var keychar;


	if (window.event){
   		key = window.event.keyCode ;
	}

	if (!key){
   		key = e.which;
	}

	keychar = String.fromCharCode(key);


// control keys
if ((key==null) || (key==0) || (key==8) || 
    (key==9) || (key==13) || (key==27) ){
   return true;

} else if (((allowedChars).indexOf(keychar) > -1)){
   return true;
}else{
   return false;
}

}

var phone_field_length=0;
function TabNext(obj,event,len,next_field) {
	if (event == "down") {
		phone_field_length=obj.value.length;
		}
	else if (event == "up") {
		if (obj.value.length != phone_field_length) {
			phone_field_length=obj.value.length;
			if (phone_field_length == len) {
				next_field.focus();
				}
			}
		}
	}

var ein_field_length=0;
function formatEIN(obj,event) {

		if( obj.value.length == 2 && event.keyCode != 8) {
		   obj.value = obj.value + '-';
                }
        return true;
}

function formatZIP(obj,event) {
    if (event.keyCode == 109) {
        obj.value = obj.value.substring(0,obj.value.length -1);
    }
    else if (obj.value.length == 6) {
        obj.value = obj.value.substring(0,obj.value.length - 1) + '-' + obj.value.substring(obj.value.length - 1, obj.value.length);
    }
    
    return true;
}