function CheckMail(sender, args)
  {
    var emailFilter = /^.+@.+\..{2,3}$/;
    
    args.IsValid = true;
    
    if (!(emailFilter.test(args.Value))) 
    {
      args.IsValid = false;   
      
      return;
    }
  }

function GalleryClick(image)
{
  $('ViewItemMainImage').src = image;
}