new Image().src = getImageAssetsBaseURL() + "content/loaders/ajax-loader5.gif";
new Image().src = getImageAssetsBaseURL() + "content/delad.gif";

/**
 * Adds an item to the basket
 */
function basketAdd(adname)
{
  if (!USER_ID) 
  {
    alert("Please log in to manage your items.");
    return;
  };
  
  try
  {
    var req = new jmAjax();
  }
  catch (e)
  {
    alert("Error initializing AJAX request: " + e);
    return;
  }
  
  req.adname = adname;
  
  req.callbackSuccess = function()
  {
    if (this.responseText != "Success")
    {
      this.callbackFailure(200);
      return;
    }
    
    var image = getObject("img_" + this.adname);
    image.src = getImageAssetsBaseURL() + "content/delad.gif";
    image.parentNode.onclick = function(adname) {
      return function() {
        basketRemove(adname); 
      };
    }(this.adname); 
  }
  
  req.callbackFailure = function(status)
  {
    basketError("Failed to add the advert to your basket.", status, this.responseText);
  }
  
  var image = getObject("img_" + adname);
  image.src = getImageAssetsBaseURL() + "content/loaders/ajax-loader5.gif";
  
  req.get("/basket?id=" + adname + "&c=add&show=0");
}
 
/**
 * Removes an item from the basket
 */
function basketRemove(adname)
{
  if (!USER_ID) 
  {
    alert("Please log in to manage your items.");
    return;
  };
  
  try
  {
    var req = new jmAjax();
  }
  catch (e)
  {
    alert("Error initializing AJAX request: " + e);
    return;
  }
  
  req.adname = adname;
  
  req.callbackSuccess = function()
  {
    if (this.responseText != "Success")
    {
      this.callbackFailure(200);
      return;
    }
    
    var image = getObject("img_" + this.adname);
    image.src = getImageAssetsBaseURL() + "content/savead.gif";
    image.parentNode.onclick = function(adname) {
      return function() {
        basketAdd(adname); 
      };
    }(this.adname); 
  }
  
  req.callbackFailure = function(status)
  { 
    basketError("Failed to remove the advert from your basket.", status, this.responseText);
  }
  
  var image = getObject("img_" + adname);
  image.src = getImageAssetsBaseURL() + "content/loaders/ajax-loader5.gif";
  
  req.get("/basket?id=" + adname + "&c=del&show=0");
}

/**
 * Shows a basket request error message.
 */
function basketError(msg, status, response)
{
  e = msg + "\n\nError code: ";
  
  if (status != 200)
  {
    e += "HTTP" + status;
  }
  else
  {
    var r = response.split(",");
    if (typeof(r[1]) != "undefined" 
        && r[0] == "ERR" && r[1] != "")
    {
      e += r[1];
      
      var baseLen = r[0].length + r[1].length;
      
      if (response.length > baseLen)
      {
        e += "\nDescription: " + response.substring(baseLen + 2);
      } 
    }
    else
    {
      e += "UNKNOWN";
    }
  }
  
  alert(e);
}