function jf_resize_editorbox(direction)
{
	var inc_value	   = 10;
	var current_height = parseInt( document.postform.message.rows );
	var new_height     = 0;
	current_height     = current_height ? current_height : 15;
	if ( current_height >= 5 ) {
		if ( direction == 'up' ) {
			new_height = current_height - inc_value;
		} else {
			new_height = current_height + inc_value;
		}
		if ( new_height > 4 && new_height < 106) {
			document.postform.message.rows = new_height;
		}
	}
}