function valIsEmail(str) {
  // are regular expressions supported?
  var supported = 0;
  if (window.RegExp) {
    var tempStr = "a";
    var tempReg = new RegExp(tempStr);
    if (tempReg.test(tempStr)) supported = 1;
  }
  if (!supported) 
    return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$");
  return (!r1.test(str) && r2.test(str));
}

function valIsPhone(str) {
	var supported = 0;
	if (window.RegExp) {
    	var tempStr = "a";
    	var tempReg = new RegExp(tempStr);
    	if (tempReg.test(tempStr)) supported = 1;
  	}
  	if (! supported) 
    	return (true);
	var r1 = new RegExp("^[0-9\(\)\+-/\. ]+$");
	return r1.test(str);
}