function change(script,para,element)
{
  new Ajax.Updater(element,script, {
	  method: 'post',
	  parameters: para,
	  evalScripts: true
  });
}

function changeForm(script,form,para,element) {

  new Ajax.Updater(element,script, {
	  method: 'post',
	  parameters: Form.serialize($(form)) + para
  });

}