var preloaded = new Array();
function preload_images() {
    for (var i = 0; i < arguments.length; i++){
        preloaded[i] = document.createElement('img');
        preloaded[i].setAttribute('src',arguments[i]);
    };
};
preload_images(
    'cmsimages/nav-whoweareRO.gif',
    'cmsimages/nav-whatwedoRO.gif',
    'cmsimagesnav-whatshappeningRO.gif',
    'cmsimages/nav-communityRO.gif',
    'cmsimages/nav-storeRO.gif',
    'cmsimages/signup-btnRO.gif',
    'cmsimages/donate-btnRO.gif'
);