function openBrWin(extras) {
  if(document.sub_form.sub_email.value != '') {
  	theURL = 'http://www.syntergy.com/general/newsletter/mail.asp?sub_email=' + document.sub_form.sub_email.value + '&sub_first=' + document.sub_form.sub_first.value + '&sub_last=' + document.sub_form.sub_last.value + '&sub_company=' + document.sub_form.sub_company.value + extras + '&ref=' + document.location.href;
 	 winName = 'processing...';
  	features = 'scrollbars=yes,resizable=yes,width=430,height=200';
  	window.open(theURL,'',features);
  } else {
  	alert('You must fill in your email address to subscribe.');
  }
}