//the following functions for newsletter form
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 chkform_pp(form)
{
	if(form.firstName.value == "")
	{
		alert("Please enter your First Name");
		form.firstName.focus();
		return false;
	}
	if(form.lastName.value == "")
	{
		alert("Please enter your Last Name");
		form.lastName.focus();
		return false;
	}
	else if(form.email.value == "")
	{
		alert("Please enter your Email Address");
		form.email.focus();
		return false;
	}
	else if(!isEmail(form.email.value))
	{
		alert("Please enter a valid Email Address");
		form.email.focus();
		return false;
	}
	else if((form.ver_num.value == "")||(form.ver_num.value.length<5))
	{
		alert("Please enter verification code");
		form.ver_num.focus();
		return false;
	}
	else
	{
		form.submit();
		return true;
		
	}
}