function showImg(img)
{
  i = img.src;
  t = img.title;
  w = img.width;
  h = img.height;

  var klein = 90;
  var groot = 600;

  i = i.replace(klein, groot);      // groot formaat
  i = i.replace(40, groot);      // kleiner formaat
  
    
  multi = groot/w;                  // factor voor juiste ratio
  w *= multi;
  h *= multi;

  h = Math.floor( h ) + klein;
  w = Math.floor( w ) + klein;
  
  document.getElementById('fotoSrc').innerHTML = '<center><img title="venster sluiten" style="cursor:pointer" onclick="hideIbox()" src="' + i + '" /></center>';
  document.getElementById('fotoTitel').innerHTML = t;
  showIbox( '#foto_content','', parseQuery('height=' + h + '&width=' + w) );
  showBG();
}

function showImgClean(src, title, width, height)
{
  i = new myImage(src, title, width, height);
  showImg( i ) ;
}

function myImage( src, title, width, height )
{
  this.src = src;
  this.title = title;
  this.width = width;
  this.height = height;
}