/**
    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':			528,			//	width to resize all banners to, only takes effect if above is 1
	'img_height':			303, 			// 	height to resize all banners to, only takes effect if above is 1
	
	'refresh_time':			4500,			//	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': 		'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':		'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

var banners = [
	new banner('AwesomeStyles', 'http://www.awesomestyles.com', 'images/4.jpg', '30/04/2019', 'bottom'),
	new banner('Just Free Templates', 'http://www.justfreetemplates.com', 'images/5.jpg', '10/04/2019', 'bottom'),
	new banner('NERC', 'http://www.northeastrunningclub.org', 'images/Chuck_index.jpg', '30/04/2019', 'top'),
	new banner('NERC', 'http://www.northeastrunningclub.org', 'images/track_index.jpg', '10/04/2019', 'top'),
	new banner('NERC', 'http://www.northeastrunningclub.org', 'images/JP_index.jpg', '30/04/2019', 'top'),
	new banner('NERC', 'http://www.northeastrunningclub.org', 'images/NERC_front_2010.jpg', '30/04/2019', 'top'),
	new banner('NERC', 'http://www.northeastrunningclub.org', 'images/LHDC_index.jpg', '30/04/2019', 'top')

]

//         				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>';
    var html = '<img border="0" src="' + bn.image + '"' + image_size + ' alt="' + bn.name + '" />';

    // 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);