function rposting_show_loading (x) {
	document.getElementById(x).style.display = 'inline';
}

function rposting_show_subcategories_inputs (selected) {
	//alert('show: ' + selected);
  	var mysack = new sack("/wp-admin/admin-ajax.php");
  	//mysack.execute = 1;
  	mysack.element = "subcategory_id";
  	mysack.method = 'POST';
  	mysack.setVar ("action", "rposting_show_subcategories_inputs");
	var indice = document.getElementById(selected).selectedIndex;
	var valor  = document.getElementById(selected).options[indice].value;
  	mysack.setVar ("category_type", valor);
	//alert('valor->category_type: ' + valor);

  	mysack.encVar ("cookie", document.cookie, false);
  	mysack.onError = function() { alert('Ajax error show_source') };
  	mysack.runAJAX();
  	return true;
}