/***************************************************

 * This function change the visibility style of 

 * an object.

 **************************************************/

var ie4 = (document.all) ? true : false;

var ns4 = (document.layers) ? true : false;

var ns6 = (document.getElementById && !document.all) ? true : false;

function ChangeLayer( obj, sty ) {

var visit = new Array();

visit['hide'] = "hidden";

visit['show'] = "visible";

if (ie4) if (document.all[obj]) document.all[obj].style.visibility = visit[sty];

if (ns4) if (document.layers[obj]) document.layers[obj].visibility = sty;

if (ns6) if (document.getElementById([obj])) document.getElementById([obj]).style.visibility = visit[sty];

}