var preload = new Array('images/bBuzzOn.gif', 'images/bAboutOn.gif', 'images/bServicesOn.gif', 'images/bClientsOn.gif','images/bPressOn.gif','images/bContactOn.gif');

var loader = new Array();
for(var i = 0; i < preload.length; i++){
   loader[i] = new Image();
   loader[i].src = preload[i];
}