var current_active_filepath;
var current_active_td = 0;
var current_active_filepath_large;
function setImageOver(elem, filepath){
   document.getElementById('product_img').src = filepath;
   if(elem.className == 'other')
      elem.className = 'other_over';
}

function setImageOut(elem){
   document.getElementById('product_img').src = current_active_filepath;
   document.getElementById('product_img_large').href = current_active_filepath_large;
   if(elem.className == 'other_over')
      elem.className = 'other';
}

function setActiveImage(elem, filepath, filepath_large, title, id){
   document.getElementById('product_image_' + current_active_td).className = 'other';
   elem.className = 'active';
   document.getElementById('product_img_large').href = filepath_large;
   document.getElementById('product_img').title = title;
   current_active_filepath = filepath;
   current_active_td = id;
   current_active_filepath_large = filepath_large;
}