var Tours =
{
  askUpgrade: function(urls)
	{
    this.urls = urls;
		
		var messageBoxHtml = '<img src="images/ksrlogo-messagebox.gif" width="125" height="78" /><br />'
		                   + '<p>Have you considered the <span class="messagebox-highlight">Kuranda Scenic Railway Gold Class</span> upgrade?  Gold Class passengers enjoy sparkling wine and/or beer and a selection of delicious finger foods for just $46 extra each.</p>'
						   + '<div class="messagebox-options">'
                           + '<input type="radio" class="radio" name="travel-class" id="gold-class-radio" onclick="Tours.setTravelClass(\'gold\');" /><label for="gold-class-radio">Upgrade to Gold Class</label><br />'
                           + '<input type="radio" class="radio" name="travel-class" id="standard-class-radio" onclick="Tours.setTravelClass(\'standard\');" /><label for="standard-class-radio">No thanks</label>'
											 + '</div>';
		MessageBox.show(messageBoxHtml, 
                    [{
                       id: 'continue',
					   text: 'Continue',
					   callback: this.continueButtonClicked.bind(this),
					   disabled: true    
                     }]);
  },
	
	setTravelClass: function(travelClass)
	{
    this.travelClass = travelClass;
		// Field.enable('messagebox-button-continue');
		$$('#messagebox-button-continue').set('disabled',false);
  },
	
	continueButtonClicked: function()
	{
    // navigate to url for selected class
    window.open(this.urls[this.travelClass], '_blank', 'menubar=0, resizable=1, scrollbars=1, status=1, titlebar=0');
  }
}