_lastHidden = '';

function show(_id) {
    //alert('test');
   /*
    if (document.layers && document.layers[_id])
        document.layers[_id].visibility = 'visible';
    else if (document.all)
        document.all[_id].style.visibility = 'visible';
	*/
	
	_object = document.getElementById(_id);
	
	//alert(_id);
	
	_object.style.display 	= 'block';
	_lastHidden = _object;
}

function hide(_id) {
   /*
	
    if (document.layers && document.layers[_id])
        document.layers[_id].visibility = 'hidden';
    else if (document.all)
        document.all[_id].style.visibility = 'hidden';
    */
	_object = document.getElementById(_id);
	_object.style.display = 'none';
}