( function( $ ) {

$( function() {
  $( '.listbuilder-lightbox-optin' ).each( function() {
    var optin = $( this ),
        delay = optin.attr( 'data-delay' ) * 1000;

    window.setTimeout( function() {
      optin.dialog( {
        draggable: false,
        modal: true,
        width: 640
      } );
    }, delay );
  } );
} );

} )( jQuery );