var isNS = (navigator.appName == 'Netscape');
var isIE = (navigator.appName == 'Microsoft Internet Explorer');
var verOK= parseInt(navigator.appVersion) >= 4;
var zoomRsc= new Object ();

function addResource (name, nStr, zStr) 
{
   zoomRsc[name]= new Object ();
   zoomRsc[name].cnt= 0;

   // Images
   zoomRsc[name].img= new Object ();
   zoomRsc[name].img[0]= new Image ();
   zoomRsc[name].img[0].src= 'pics/' + name + '.jpg';
   zoomRsc[name].img[1]= new Image ();
   zoomRsc[name].img[1].src= 'pics/' + name + '_zoom.jpg';

   // Info strings
   zoomRsc[name].infoStr= new Object ();
   zoomRsc[name].infoStr[0]= nStr;
   zoomRsc[name].infoStr[1]= zStr;
}

function getRscImage (name) 
{
   zoomRsc[name].cnt= (zoomRsc[name].cnt+ 1) % 2;
   return zoomRsc[name].img[zoomRsc[name].cnt].src;
}

function getRscStr (name) 
{
   return zoomRsc[name].infoStr[zoomRsc[name].cnt];
}