/* global.js - includes calls used sitewide
  ========================================================================================================================= */ 

  function getQuerystringValue( name )
  {
    var value;

    try { value = unescape( location.search.match( new RegExp( name + "=+([^&]*)" ) )[ 1 ] ); }
    catch( e ) { value = ""; }

    return value;
  }



  /* email signup 
     ============ */  
  function submitEmail()
  {
    var email = document.getElementById( 'email' ).value;
    if( email.indexOf( '@' ) == -1 || email.indexOf( '.' ) == -1 ) { alert( 'Email address is invalid.' ) }
    else { window.open( '/signup/add-email.php?email=' + email, '_blank', 'width=615,height=450,menubar=no,toolbar=no,location=no,directories=no,status=yes,resizable=yes,scrollbars=yes' ); }
  }

  function popupSignup()
  {
    window.open( '/signup/', '_blank', 'width=615,height=450,menubar=no,toolbar=no,location=no,directories=no,status=yes,resizable=yes,scrollbars=yes' );
  }