function movingContent() {
    var contentHeight    = $('mainContent').getHeight();
    var additionalHeight = $('additionalContent').getHeight();
    var frameHeight      = $('frameContainer').getHeight();
    var windowSize       = document.viewport.getHeight();

    if((frameHeight+40) < windowSize) {
      $('frameContainer').setStyle({height: windowSize-25+"px"});
      frameHeight      = $('frameContainer').getHeight();
      var contentFrame = $('contentFrame').getHeight();
      var naviHeight   = $('root').getHeight();
      var headHeight   = $('headFrame').getHeight();

      $('contentFrame').setStyle({height: windowSize-25-headHeight-naviHeight+"px"});
    }
    if(additionalHeight < contentHeight) {
      $('additionalContent').setStyle({height: contentHeight-47+"px"});
    } else {
      $('mainContent').setStyle({height: additionalHeight-57+"px"});
    }
}