function toggleImage(obj) {
  var img = obj.getElementsByTagName('IMG')[0];

  if (img) {
    if (img.src.indexOf('_on') == -1) {
      img.src = img.src.replace('.gif', '_on.gif');
    }
    else {
      img.src = img.src.replace('_on.gif', '.gif');
    }
  }
}


function showGalleryDetail(contentId) {
  var detail = document.getElementById('content' + contentId);
  var gallery = document.getElementById('mainContent').getElementsByTagName('div');

  for (var i=0; i<gallery.length; i++) {
    if (gallery[i].className == 'galleryImage') {
      gallery[i].style.display = 'none';
    }
  }

  detail.style.display = 'block';

}


function hideGalleryDetail(contentId) {
  var detail = document.getElementById('content' + contentId);
  var gallery = document.getElementById('mainContent').getElementsByTagName('div');


  detail.style.display = 'none';

  for (var i=0; i<gallery.length; i++) {
    if (gallery[i].className == 'galleryImage') {
      gallery[i].style.display = 'block';
    }
  }

}




function setOpacity(obj, iLevel) {
  obj.style.filter = 'alpha(opacity=' + iLevel + ')';
  obj.style.MozOpacity = iLevel / 100;
  obj.style.opacity = iLevel / 100;
}


function gradualfade(obj, iInc, iEnd) {
  iLevel = (obj.style.opacity * 100);

  if ((iInc > 0 && iLevel < iEnd) || (iInc < 0 && iLevel > iEnd)) {
    setOpacity(obj, iLevel + iInc, iEnd)
  }
  else {
    clearInterval(intervalVar);

    if (filterLayer && iEnd == 0) {
      hideFilterLayer();
    }

  }
}

function showFullSize(url, oLink) {
  var oImg = oLink.getElementsByTagName('img')[0];


//Sample.htm",null, "height=200,width=400,status=yes,toolbar=no 

//  window.open()
}


function screenHeight() {
   if(document.all){
      availW = document.body.clientWidth;
      availH = document.body.clientHeight;
   }else{
      availW = innerWidth;
      availH = innerHeight;
   }
  return availH;
}

function screenWidth() {
   if(document.all){
      availW = document.body.clientWidth;
      availH = document.body.clientHeight;
   }else{
      availW = innerWidth;
      availH = innerHeight;
   }
  return availW;
}