document.volForm.email.value = getParam('email');
document.volForm.zip.value = getParam('zip');

function getParam( name )
{
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}

function send_form(){
	if(document.getElementById("form_email").value){
		document.volForm.submit();
	}
	else{
		document.getElementById("form_email_txt").innerHTML = '<font style="color:red">Email: *</font>';
	}
}