Mapping Multiple authors on a WordPress data import browser snippet

gistfile1.js

jQuery('select[name*="user_map"]').each(function(idx, el){
  var $select = jQuery(el),
      $parent = jQuery(el).parent().parent(),
      $strong = $parent.find('strong'),
      name = $strong.text().split(' (')[0].trim(),
      val = $select.find('option').filter(function () { return jQuery(this).html() == name; }).val();
    
    if ( val !== undefined ) {
      $select.val(val);
    } else {
      $parent.css('background', '#ffcc33');
    }
});