function preloadNavButtons() {

MM_preloadImages(rootpath + 'images/Buttons/BtnHomeOff.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnHomeOn.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnAtAGlanceOff.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnAtAGlanceOn.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnInterestsOn.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnInterestsOff.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnAZMedicinesOn.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnAZMedicinesOff.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnBuyOnlineOn.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnBuyOnlineOff.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnLegalitiesOn.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnLegalitiesOff.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnContactOff.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnContactOn.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnLinksOff.gif');
MM_preloadImages(rootpath + 'images/Buttons/BtnLinksOn.gif');

}