var gallery = {
       imagecount:0,
       currentImageNr: 1,
       
       showFloatingDiv: function(imageNr){
       	gallery.imagecount = $$('td.galleryImageContainer').length;
        gallery.currentImageNr = imageNr;
        $('galleryFloatImage').onload = function(){ $('galleryImageFloatingDiv').style.display = 'block'; }
        gallery.displayImage();
       },
       
       displayImage: function(){
        var imageID = 'galleryImage_'+gallery.currentImageNr;
        
        if(gallery.currentImageNr>=gallery.imagecount){
          $('galleryControlNext').style.visibility = 'hidden';
        }else{ $('galleryControlNext').style.visibility = 'visible'; }
        
        if(gallery.currentImageNr<=1){
          $('galleryControlPrevious').style.visibility = 'hidden';
        }else{ $('galleryControlPrevious').style.visibility = 'visible'; }
        
        $('galleryFloatImage').src = $(imageID).src.replace(/tn_/,'');
       },
       
       closeFloatingDiv: function(){
        gallery.currentImageNr = 1;
        $('galleryImageFloatingDiv').style.display = 'none';
       },
       
       nextImage: function(){
        gallery.currentImageNr++;
        gallery.displayImage();
       },
       
       previousImage: function(){
        gallery.currentImageNr--;
        gallery.displayImage();
       }
  }