var buttonFolder = "imagini/"; 
upSources = new Array('but_cars_on.png','but_home_on.png','but_upgrades_on.png','but_garage_on.png','but_races_on.png','but_ARP_on.png','bara_stanga.jpg');

//*** NO MORE SETTINGS BEYOND THIS POINT ***//
var totalButtons = upSources.length;


//*** MAIN BUTTONS FUNCTIONS ***//
// PRELOAD MAIN MENU BUTTON IMAGES
   for ( x=0; x<totalButtons; x++ ) {
      buttonUp = new Image();
      buttonUp.src = buttonFolder + upSources[x];
   }