var SelectedImage = "";
var SelectedImage2
function SetImage( _Image )
{
    var Image = _Image;
    
    if (SelectedImage != Image)
    {
        var NewSrc = Image.src;
            NewSrc = NewSrc.replace("thumb/","");
            
            document.getElementById('BigImage').src = NewSrc;
            document.getElementById('DescriptionPhoto').innerHTML = Image.alt;
        
            Image.className = "photoSmallGalleryActual";
            
            if (SelectedImage != "")
               SelectedImage.className = "photoSmallGallery";
                
            SelectedImage = Image;
            SelectedImage2 = document.getElementById("BigImage");
            SelectedImage2.setAttribute( "ImageId", Image.id );
     }
}


function body_load()
{
        var SelectedImage2 = document.getElementById("BigImage");
        var FirstImage    = document.getElementById("ImageContainer").firstChild.firstChild;
            SelectedImage2.setAttribute( "ImageId", FirstImage.id );       
            //SelectedImage2.src = FirstImage.src;  
}

function Next(){
    SelectedImage2 = document.getElementById("BigImage");
    if(document.getElementById( SelectedImage2.getAttribute( "ImageId" ) ).parentNode.nextSibling) {
    var NextImage     = document.getElementById( SelectedImage2.getAttribute( "ImageId" ) ).parentNode.nextSibling.firstChild;
    
        if( NextImage ) {
            SelectedImage2.setAttribute( "ImageId", NextImage.id );
            SelectedImageSmall = SelectedImage2.getAttribute( "ImageId" );
            //document.getElementById(SelectedImageSmall).setAttribute( "class", "photoSmallGalleryActual" );
            document.getElementById(SelectedImageSmall).className = "photoSmallGalleryActual";
            document.getElementById('DescriptionPhoto').innerHTML = document.getElementById(SelectedImageSmall).alt;

            if (SelectedImage != "")
               SelectedImage.className = "photoSmallGallery";

            SelectedImage = document.getElementById(SelectedImageSmall);

            NextImage = NextImage.src;
            NextImage = NextImage.replace("thumb/","");
            SelectedImage2.src = NextImage;
        }
    }
}
function Prev(){
    SelectedImage2 = document.getElementById("BigImage");
    if( document.getElementById( SelectedImage2.getAttribute( "ImageId" ) ).parentNode.previousSibling ) {
    var PrevImage     = document.getElementById( SelectedImage2.getAttribute( "ImageId" ) ).parentNode.previousSibling.firstChild;
        if( PrevImage ) {
            SelectedImage2.setAttribute( "ImageId", PrevImage.id );
            SelectedImageSmall = SelectedImage2.getAttribute( "ImageId" );
            //document.getElementById(SelectedImageSmall).setAttribute( "class", "photoSmallGalleryActual" );
            document.getElementById(SelectedImageSmall).className = "photoSmallGalleryActual";
            document.getElementById('DescriptionPhoto').innerHTML = document.getElementById(SelectedImageSmall).alt;

            if (SelectedImage != "")
               SelectedImage.className = "photoSmallGallery";

            SelectedImage = document.getElementById(SelectedImageSmall);
            
            PrevImage = PrevImage.src;
            PrevImage = PrevImage.replace("thumb/","");
            SelectedImage2.src = PrevImage;
        }
    }
}