/**
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

	--------------------------------------------------------------------

	Simple banner rotator. Version: 1.4.0
	Download and support: http://www.spyka.net
	(c) Copyright 2008, 2009 spyka Web Group


	For full documentation:  http://www.spyka.net/docs/simple-banner-rotator
	For support:			 http://www.spyka.net/forums


**/

//								EDIT FROM HERE
///////////////////////////////////////////////////////////////////////////////////

/**
		Script settings
**/

var settings = {
    'force_size':			0,         		// 	if set to 1 all banners will be resized to the width and height in the next to settings
    'img_width':			468,			//	width to resize all banners to, only takes effect if above is 1
    'img_height':			60, 			// 	height to resize all banners to, only takes effect if above is 1
    'refresh_time':			0,
    'refresh_time':			0,			//	the seconds between refreshs of the banners - use 0 to disable
    'refresh_max':			100,				//	maximum number of refreshs on each page load
    'duplicate_banners':	0,				//	keep as 0 to make sure the same banner won't show on the same page. will only take effect
        //  if show_banners(); is used more than once. You must make sure you have enough banners to fill
        //  all the slots else the browser may freeze or give a stack overflow error
    'location_prefix': 		'',
        //'location_prefix': 		'adLocation-',	//	The prefix of the IDs of the <div> which wraps the banners - this div is generated dynamically.
											//  a number will be added on the end of this string. adLocation- was used by default before version 1.4.x
    'location_class':		'',
	//'location_class':		'swb',			//  A class to add to all of the <div>s which wrap the banners, ideal to use for styling banners - use .swb img in your CSS
    'window': 				'_self',		//	Window to open links in, _self = current, _blank = new. Use _top if in a frame!
    'default_ad_loc':		'default'		//	The default adLocation. This is assigned to any banners not given an adLocation in the below banner list
        //  There is no real reason to need to change this
}


/**
		Banners
**/
// banner list syntax: new banner(website_name, website_url, banner_url, show_until_date, adlocation),  DATE FORMAT: dd/mm/yyyy
// if you're not using adlocations just leave it empty like '' as in the last example here
// to make sure a banner is always rotating, just set the date far into the future, i.e. year 3000

// TEMP: change 2000s back to 2010 if you need to re-enable banners

var banners = [
    new banner('Dartford Festival', '/festival', 'images/banners/DF11_web_banner_RP_your_vie.jpg', '18/10/2010', 'righttop'),
	new banner('Summer Sizzlers 2011', '/summersizzlers/', 'images/banners/sizzlers_banner.jpg', '18/10/2010', 'rightbottom'),
    new banner('August Bank Holiday Refuse and Recycling Collection Dates', '/recycling/august_bank_holiday_refuse_and_recycling.htm', 'images/banners/august_web_banner.jpg', '12/10/2010', 'righttop'),
    new banner('Bandstands Concerts 2011', '/centralpark/bandstandprogramme.htm', 'images/banners/bandstand_right_banner.jpg', '18/10/2010', 'rightbottom'),
    new banner('Farmers Market', '/markets/', 'images/banners/markets_banner.jpg', '20/03/2012', 'righttop'),
    new banner('Christmas Recycling', '/christmas/refusecollection.htm', 'images/banners/xmas_recycling.jpg', '09/01/2012', 'righttop'),
	new banner('Long to Reign Over Us', '/museum/', 'images/banners/ltrou_web_banner', '25/06/2012', 'rightbottom'),
	new banner('Midnight WoMan', 'http://www.bridgetriathlon.co.uk', 'images/banners/triathlon_banner.jpg', '19/08/2012', 'rightbottom')
];

//         				There is no need to edit below here
///////////////////////////////////////////////////////////////////////////////////

/*****
"global" vars
*****/
var used				= 0;
var location_counter	= 0;
var refresh_counter 	= 1;
var map 				= new Array();

/*************
	function banner()
	creates a banner object
*************/
function banner(name, url, image, date, loc)
{
    this.name	= name;
    this.url	= url;
    this.image	= image;
    this.date	= date;
    this.active = 1;
    this.oid = 0;
	// if no adlocation is given use the default a adlocation setting
	// this is used if adlocations aren't being used or using pre-1.4.x code
    if(loc != '')
    {
        this.loc = loc;
    }
    else
    {
        this.loc = settings.default_ad_loc;
    }
}


/*************
	function show_banners()
	writes banner <div> HTML and maps ad locations to <div> ID tags
*************/
function show_banners(banner_location)
{
	// increase the counter ready for further calls
    location_counter = location_counter + 1;

	// this part maps the adlocation name supplied by the user to the adlocation
	// ID used by the script
    if(banner_location != '' && banner_location != undefined)
    {
        map[location_counter] = banner_location;
    }
    else
    {
        map[location_counter] = settings.default_ad_loc;
    }

	// writes banner html
    var html = '<div id="' + settings.location_prefix + location_counter + '" class="' + settings.location_class + '"></div>';
    document.write(html);
	// calls the display banners script to fill this ad location
    display_banners(location_counter);

}

/*************
	function display_banners()
	displays banners for a given location number
*************/
function display_banners(location)
{
	// used in this function to hold tempoary copy of banners array
    var location_banners	= new Array();

	// if no location is given, do nothing
    if(location == '' || !location || location < 0)
    {
        return;
    }

	// get total banners
    var am	= banners.length;

	// all banners have been displayed in this pass and the user doesnt
	// want to have duplicate banners showing
    if((am == used) && settings.duplicate_banners == 0) {
        return;
    }

	// new for 1.4.x, this takes the list of banners and creates a tempoary list
	// with only the banners for the current adlocation in
    for(i = 0; i < (banners.length); i++)
    {
        banners[i].oid = i;
        if((banners[i].loc == map[location]) && (banners[i].active == 1))
        {
            location_banners.push(banners[i]);
        }
    }

	// same as 1.2.x - finds the banner randomly
    var rand	= Math.floor(Math.random()*location_banners.length);
    var bn 		= location_banners[rand];

	// creates html
    var image_size  = (settings.force_size == 1) ? ' width="' + settings.img_width + '" height="' + settings.img_height + '"' : '';
    var html        = '<a href="' + bn.url + '" title="' + bn.name + '" target="' + settings.window + '"><img border="0" src="' + bn.image + '"' + image_size + ' alt="' + bn.name + '" /></a>';

	// calculates the date from inputted string, expected formate is DD/MM/YYYY
    var now     = new Date();
    var input   = bn.date;
    input       = input.split('/', 3);

	// creates a date object with info
    var end_date    = new Date();
    end_date.setFullYear(parseInt(input[2]), parseInt(input[1]) - 1, parseInt(input[0]));

	// compares curent date with banner end date
    if((now < end_date) && bn.active == 1)
    {
        // attempt to find adlocation div

        var location_element = document.getElementById(settings.location_prefix + location);

        // couldn't find it, if this message shows there is a problem with show_banners

        if(location_element == null)
        {
            alert('spyka Webmaster banner rotator\nError: adLocation doesn\'t exist!');
        }

        // output banner HTML

        else
        {
            location_element.innerHTML = html;

			// if the user doesn't want the same banner to show again deactive it and increase
			// the users banners counter
            if(settings.duplicate_banners == 0)
            {
                banners[bn.oid].active = 0;
                used++;
            }
            return;
        }
    }
    else
    {
		// inactive banner, find another
		// if no banners fit this adlocation you'll have an endless loop !

        display_banners(location);
    }
    return;
}



/*************
	function refresh_banners()
	resets counters and active settings
*************/

function refresh_banners()
{
    if((refresh_counter == settings.refresh_max) || settings.refresh_time < 1)
    {
        clearInterval(banner_refresh);
    }
    used = 0;
    for(j = 0; j < (banners.length); j++)
    {
        banners[j].active = 1;
    }

    for(j = 1; j < (location_counter+1); j++)
    {
        display_banners(j);
    }
    refresh_counter++;
}



// set timeout

var banner_refresh = window.setInterval(refresh_banners, settings.refresh_time);



