function insertBanner(bannerJson) {
	jQuery('div#centralNotice').prepend( bannerJson.banner );
}
function toggleNotice() {
	var notice = document.getElementById('centralNotice');
	if (!wgNoticeToggleState) {
		notice.className = notice.className.replace('collapsed', 'expanded');
		toggleNoticeCookie('0');
	} else {
		notice.className = notice.className.replace('expanded', 'collapsed');
		toggleNoticeCookie('1');
	}
	wgNoticeToggleState = !wgNoticeToggleState;
}
function toggleNoticeStyle(elems, display) {
	if(elems)
		for(var i=0;i<elems.length;i++)
			elems[i].style.display = display;
}
function toggleNoticeCookie(state) {
	var e = new Date();
	e.setTime( e.getTime() + (7*24*60*60*1000) ); // one week
	var work='hidesnmessage='+state+'; expires=' + e.toGMTString() + '; path=/';
	document.cookie = work;
}
var wgNoticeToggleState = (document.cookie.indexOf('hidesnmessage=1')==-1);

( function( $ ) {
	$.ajaxSetup({ cache: true });
	$.centralNotice = {
		'data': {
			'getVars': {}
		},
		'fn': {
			'loadBanner': function( bannerName ) {
				// Get the requested banner
				var bannerPageQuery = $.param( { 
					'banner': bannerName, 'userlang': wgUserLanguage, 
					'db': wgDBname, 'sitename': wgSiteName, 'country': Geo.country } );
				var bannerPage = '?title=Special:BannerLoader&' + bannerPageQuery;
				var bannerScript = '<script type="text/javascript" src="http://meta.wikimedia.org/w/index.php' + bannerPage + '"></script>';
				$( '#siteNotice' ).prepend( '<div id="centralNotice" class="' + 
					( wgNoticeToggleState ? 'expanded' : 'collapsed' ) + 
					'">'+bannerScript+'</div>' );
			},
			'loadBannerList': function( geoOverride ) {
				if ( geoOverride ) {
					var geoLocation = geoOverride; // override the geo info
				} else {
					var geoLocation = Geo.country; // pull the geo info
				}
				var bannerListQuery = $.param( { 'language': wgContentLanguage, 'project': wgNoticeProject, 'country': geoLocation } );
				var bannerListURL = wgScript + '?title=' + encodeURIComponent('Special:BannerListLoader') + '&cache=/cn.js&' + bannerListQuery;
				var request = $.ajax( {
					url: bannerListURL,
					dataType: 'json',
					success: $.centralNotice.fn.chooseBanner
				} );
			},
			'chooseBanner': function( bannerList ) {
				// Convert the json object to a true array
				bannerList = Array.prototype.slice.call( bannerList );
				
				// Make sure there are some banners to choose from
				if ( bannerList.length == 0 ) return false;
				
				var groomedBannerList = [];
				
				for( var i = 0; i < bannerList.length; i++ ) {
					// Only include this banner if it's intended for the current user
					if( ( wgUserName && bannerList[i].display_account ) || 
						( !wgUserName && bannerList[i].display_anon == 1 ) ) 
					{
						// add the banner to our list once per weight
						for( var j=0; j < bannerList[i].weight; j++ ) {
							groomedBannerList.push( bannerList[i] );
						}
					}
				}
				
				// Return if there's nothing left after the grooming
				if( groomedBannerList.length == 0 ) return false;
				
				// Load a random banner from our groomed list
				$.centralNotice.fn.loadBanner( 
					groomedBannerList[ 
						Math.floor( Math.random() * groomedBannerList.length ) 
					].name
				);
			},
			'getQueryStringVariables': function() {
				document.location.search.replace( /\??(?:([^=]+)=([^&]*)&?)/g, function () {
					function decode( s ) {
						return decodeURIComponent( s.split( "+" ).join( " " ) );
					}
					$.centralNotice.data.getVars[decode( arguments[1] )] = decode( arguments[2] );
				} );
			}
		}
	}
	$( document ).ready( function () {
		// Initialize the query string vars
		$.centralNotice.fn.getQueryStringVariables();
		if( $.centralNotice.data.getVars['banner'] ) {
			// if we're forcing one banner
			$.centralNotice.fn.loadBanner( $.centralNotice.data.getVars['banner'] );
		} else {
			// Look for banners ready to go NOW
			$.centralNotice.fn.loadBannerList( $.centralNotice.data.getVars['country'] );
		}
	} ); //document ready
} )( jQuery );