function validateEmailForm(str)
{
 	var supported = 0;
	var errormsg = "";

 	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]{2,5}|[0-9]{1,3})(\\]?)$");
		
	var validemail = (!r1.test(str) && r2.test(str));
		
	if (validemail == false)
		errormsg += "'"+str+"'" + " is not a valid Email address.\n";

	var inputs = document.getElementsByTagName('input');
		
	
	if (validemail)
		return true;

	alert(errormsg);
				
	return false;
}