var cancel_sub = false;
var fix_img = "";
var fix_position = "";
var sub_timeout = "";
var successfully_cancelled = false;

function bg_selection(current_position)
	{
    	var bg_array = new Array("/images/page/large_403.jpg","/images/page/large_345.jpg","/images/page/large_346.jpg","/images/page/large_405.jpg","/images/page/large_406.jpg","/images/page/large_404.jpg","/images/page/large_347.jpg","/images/page/large_352.jpg","/images/page/large_407.jpg","/images/page/large_350.jpg","/images/page/large_351.jpg","/images/page/large_353.jpg");
    var alts_array = new Array("It's Cornwall's favourite destination","Ideal for all the family","Spectacular places to stay - prices to suit all pockets","Action packed events throughout the year","Loads of fun for kids of all ages","The locals are usually quite friendly","Mouthwatering local produce with views to dine for","Expert tuition available to master the waves","For total relaxation - just add water","Discover a treasure trove of splendid attractions","It's so much more than just buckets and spades","You are invited to join our party...");
    var titles_array = new Array("Mobius Kite Surf School","Peter Cade Photography","Blue Chip Vacations","Essential Pics","Holywell Bay Fun Park","Lusty Glaze Adventure Centre","","Escape Surf School","Trebarwith Hotel","Buccaneer Bay","Essential Pics","Berties Club");	
	if(current_position == null)
		{
		current_position = -1;	
		}
	//get the total number of bgs
	var array_len = bg_array.length;
   // alert(array_len);
	current_position++;
	if(current_position >= array_len)
		{
		current_position = 0;	
		}
	//alert(current_position);
	var return_array = new Array();
	return_array["current_position"] = current_position;
	return_array["image_name"] = bg_array[current_position];
    return_array["image_alt"] = alts_array[current_position];
    return_array["image_title"] = titles_array[current_position];
	
	return return_array;
	}

function cancel_substitutions(fix_img_int, fix_pos_int)
	{
    cancel_sub = true;
    fix_img = fix_img_int;
	fix_position = fix_pos_int;
    sub_timeout = "";
    window.clearTimeout(sub_timeout);
    }

function substitute(backgroundImagePath, current_position, current_z_index, backgroundOverlay_remove, alt, title) 
	{
    if(!cancel_sub)
    	{
        if(backgroundImagePath == "")
            {
            current_array = bg_selection(current_position);
            substitute(current_array["image_name"], current_array["current_position"], current_z_index, null, current_array["image_alt"], current_array["image_title"]);	
            //break;
            }
        else
            {
            current_z_index++;
            var imageUrl          = 'url(' + backgroundImagePath + ') center 0px no-repeat';
            //alert(imageUrl );
            var backgroundOverlay = $('background-overlay_' + current_position);
            
            if(backgroundOverlay != null) 
                {
                backgroundOverlay.setStyle('background', imageUrl);
                } 
            else 
                {
                try
                    {
                    tmp_height = $('inner_container').getHeight();
                    }
                catch(err)
                    {
                    tmp_height = "3036";
                    }	
                backgroundOverlay = new Element('div', {
                    'id': 'background-overlay_' + current_position,
                    'style': 'background: ' + imageUrl + '; z-index: '+current_z_index+'; position: absolute; left:0px; top:0px; width: 100%; height:'+tmp_height+'px;'
                });
                backgroundOverlay.setOpacity(0);
                var outerContainer = $('container');
                
                Element.insert($('container'), {'before':backgroundOverlay} );
                new Effect.Fade($('info_bar_left'), 
                                  { 
                                  duration: 0.5,
                                  afterFinish: function() 
                                        { 
                                        $('info_bar_left').innerHTML = "";
                                        }
                                  });
                new Effect.Fade($('info_bar_right'), 
                                  { 
                                  duration: 0.5,
                                  afterFinish: function() 
                                        { 
                                        $('info_bar_right').innerHTML = "";
                                        }
                                  });
                new Effect.Morph($('js_image_gallery_info_bar'), 
                                  { 
                                  style: 'opacity:0.0;filter:alpha(opacity=0)',
                                  duration: 0.5
                                  });
                new Effect.Appear(backgroundOverlay, 
                                  { 
                                  duration: 3.0,
                                  afterFinish: function() 
                                        { 
                                       	//$('info_bar_left').innerHTML = "Test";
                                        //$('info_bar_right').innerHTML = "Test2";
                                        var stylebg = backgroundOverlay.getStyle('background-image');
                                        if(backgroundOverlay_remove != null)
                                            {
                                            backgroundOverlay_remove.remove();
                                            var zminus = backgroundOverlay.getStyle('zIndex') - 1;
                                            backgroundOverlay.setStyle({zIndex: zminus});
                                            }
                                        current_array = bg_selection(current_position);
                                        $('info_bar_left').innerHTML = alt;
                                        $('info_bar_right').innerHTML = title;
                                        new Effect.Morph($('js_image_gallery_info_bar'), 
                                          { 
                                          style: 'opacity:1.0;filter:alpha(opacity=100)',
                                          duration: 0.5,
                                          afterFinish: function() 
                                                { 
                                               new Effect.Appear($('info_bar_left'), 
                                                  { 
                                                  duration: 0.5
                                                  });
                                                new Effect.Appear($('info_bar_right'), 
                                                  { 
                                                  duration: 0.5
                                                  });
                                                }
                                          });
                                        
                                        
                                        
                                        //alert(current_array["image_alt"] + ' ' + current_array["image_title"]);
                                        
                                        sub_timeout = function()
                                            {
                                            substitute(current_array["image_name"], current_array["current_position"], backgroundOverlay.getStyle('z-index'), backgroundOverlay, current_array["image_alt"], current_array["image_title"]);
                                            }
                                        sub_timeout.delay(3);
                                        }
                                    
                                  }
                                  );
                     	}
          
                }
		}
    else
    	{
        sub_timeout = "";
        cancel_sub = false;
        sub_timeout = function()
                {
                tmp = bg_selection(fix_position - 1);
                substitute(fix_img, fix_position, current_z_index, backgroundOverlay_remove, tmp["image_alt"], tmp["image_title"]);
                };
        sub_timeout.delay(0);
        } 
	}