var topImagesList = "";
var topImageIndex = 0;
var ImageTimer;
var topImage; 

function ChangeTopImage() {
    topImage.animate({ 'opacity': '0' }, 2000, function() {
        topImage.css('background-image', GetNextImage());
        $(this).animate({ 'opacity': '1' }, 2000);
    });
}

function GetNextImage() {
    topImageIndex++;
    if (topImageIndex == topImagesList.length)
        topImageIndex = 0;
    return 'url(/portals/0/' + topImagesList[topImageIndex] + ')';
}


function iBugFix() {
    var lowerleft = [window.pageXOffset, (window.pageYOffset + window.innerHeight)];
    var lowerright = [(lowerleft[0] + window.innerWidth), lowerleft[1]];
    var zoomFactor = window.innerWidth / document.documentElement.clientWidth;

    bot_menu.style.width = lowerright[0] - lowerleft[0] + 'px';
    //bot_menu.style.height = parseInt(window.innerHeight / 10) + 'px';
    bot_menu.style.left = lowerleft[0] + 'px';
    bot_menu.style.top = lowerleft[1] - bot_menu.offsetHeight + 'px';
    bot_menu.style.fontSize = parseInt(zoomFactor * 30) + 'px';
}