var nav4 = window.Event ? true : false;
function accepnum(evt)
	{ 
	// NOTE: Backspace = 8, Enter = 13, '0' = 48, '9' = 57 
	var key = nav4 ? evt.which : evt.keyCode; 
	return (key <= 13 || (key >= 48 && key <= 57));
	}


function showObject(objID)  // Mostrar Tabla         http://www.multimundos.cl
{
	var obj = getObject(objID);
	var rtn = false;
	if (obj != null) {
     	obj.style.display = "inline";
        obj.style.position = "static";
        obj.style.width = "auto";
        obj.style.height = "auto";
        obj.style.overflow = "visible";
		rtn = true;
	}
	return rtn;
}
function hideObject(objID)  // Ocultar Tabla   http://www.multimundos.cl
{
	var obj = getObject(objID);
	var rtn = false;
	if (obj != null) {
     	obj.style.display = "none";
        obj.style.position = "static";
        obj.style.width = "auto";
        obj.style.height = "0";
		rtn = true;
	}
	return rtn;
}
function getObject(objID)  // funcion para ocultar y mostar Trabla    http://www.multimundos.cl
{
   if (document.all)
   {
      var obj = document.all[objID];
   }
   else if (document.getElementById)
   {
      var obj = document.getElementById(objID);
   }
	return obj;
}