function include(file)
{

  var script  = document.createElement('script');
  script.src  = file;
  script.type = 'text/javascript';
  script.defer = true;

  document.getElementsByTagName('head').item(0).appendChild(script);

}

include('/javascript/prototype.js.php');
include('/javascript/estimated_payment.js');
include('/javascript/common.js.php');
include('/javascript/newStateCity.js.php');
include('/javascript/dragbox.js.php');