function Picture_Delete(pictureId){    
    if(confirm('Are you sure you want to delete this picture?')){
        // delete on the server
        Photocore.Modules.WebApi.Picture_Delete(pictureId);
        
        // drop it from the web page
        var picthumb = document.getElementById('PictureThumbnail' + pictureId);
        if(picthumb)
            picthumb.style.display = 'none';
            
    } else {
    
    }
}