function preloadImages( imageRoot ){
 if (document.images) {  

    preloadPics(imageRoot,
        'logo-jetstyle', 'logo-jetstyle-'
         );

    preloadPics(imageRoot+'meta/',
        'home', 'home-',
        'mail', 'mail-',
        'map', 'map-'
         );

  }

  preloadFlag = true;
}
var interval_id;
function startSlideShow(id)
{
    current_topic = id;
    current_slide = 0;

    if ( !by_topic[ current_topic ] ) 
        return;

    if (findObj("brands"))
        findObj("brands").className="invisible";
    
    
    

    //if (findObj( "bl_"+id ))
    //    findObj("logo").style.background = findObj( "bl_"+id ).style.background;


    var slideshow = $("#slideshow");  
    slideshow.initSlideShow("#prevousButton","#nextButton")  ;
    findObj("slideshow").className="slideshow";
    
/*  deprecated
    nextSlide();
    interval_id = setInterval(nextSlide, slide_interval);
*/
}

function nextSlide()
{    
    if ( by_topic[ current_topic ][ current_slide+1 ] )
        current_slide++;
    else
        current_slide = 0;

    if ( by_topic[ current_topic ] )
    {
        findObj("slide").src = by_topic[ current_topic ][ current_slide ].src;
    }
}

function prevSlide()
{
    if ( by_topic[ current_topic ][ current_slide-1 ] )
        current_slide--;
    else
        current_slide = by_topic[ current_topic ].length-1;

    if ( by_topic[ current_topic ] )
    {
        findObj("slide").src = by_topic[ current_topic ][ current_slide ].src;
    }
}

function doNextSlide()
{
    clearInterval(interval_id);
    nextSlide();
}

function doPrevSlide()
{
    clearInterval(interval_id);
    prevSlide();
}

function closeSlide()
{
    clearInterval(interval_id);
    findObj("brands").className="brands";
    findObj("slideshow").className="invisible";
    findObj("slide").src = "";
}

function getSlidesPaths()
{
    var ret = by_topic[ current_topic ];
    
    findObj("slide").src = ret[0];
    return ret;
}