// JavaScript Document

// Check that a string contains only numbers
function isNumeric(string, ignoreWhiteSpace) {
   if (string.search) {
      if ((ignoreWhiteSpace && string.search(/[^\d\s]/) != -1) || (!ignoreWhiteSpace && string.search(/\D/) != -1)) return false;
   }
   return true;
}

// Check that an email address has the form something@something.something
// This is a stricter standard than RFC 821 (?) which allows addresses like postmaster@localhost
function isValidEmailStrict(address) {
   if (isValidEmail(address) == false) return false;
   var domain = address.substring(address.indexOf('@') + 1);
   if (domain.indexOf('.') == -1) return false;
   if (domain.indexOf('.') == 0 || domain.indexOf('.') == domain.length - 1) return false;
   return true;
}

function removeSingleQuote(str) {
	var newString = '';
	//alert(str);
	for (var i = 0; i < str.length; i++) {
      if (str.charAt(i) != '\'') newString += str.charAt(i);
   }
   return newString;
}

// Check that an email address is valid based on RFC 821 (?)
function isValidEmail(address) {
   if (address != '' && address.search) {
      if (address.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1) return true;
      else return false;
	}
}