function isEmail(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]{2,3}|[0-9]{1,3})(\\]?)$");
  return (!r1.test(str) && r2.test(str));
}

	function doTrim(incomingText)
	{
		workString=incomingText;
		str1 = " ";
		str2 = "";
		while (workString.indexOf(str1)!=-1)
		{
			workString=workString.substring(0,workString.indexOf(str1))+str2+workString.substring(workString.indexOf(str1)+str1.length,workString.length);
		}
		return workString;
	}