/**
 * --------------------------------------------------------------------
 * jQuery-Plugin "preloadCssImages"
 * by Scott Jehl, scott@filamentgroup.com
 * http://www.filamentgroup.com
 * reference article: http://www.filamentgroup.com/lab/automated_image_preloading/
 * demo page: http://www.filamentgroup.com/examples/preloadImages/
 * 
 * Copyright (c) 2008 Filament Group, Inc
 * Dual licensed under the MIT (filamentgroup.com/examples/mit-license.txt) and GPL (filamentgroup.com/examples/gpl-license.txt) licenses.
 *
 * Version: 1.0, 31.05.2007
 * Changelog:
 * 	02.20.2008 initial Version 1.0
 * --------------------------------------------------------------------
 */
$.preloadCssImages = function(settings){
	//overrideable defaults
	settings = jQuery.extend({
		 imgDir: '/images/bg'
	}, settings);

	//dump all the css rules into one string
	var sheets = document.styleSheets;
	var cssPile = '';
	for(var i = 0; i<sheets.length; i++){
		if(!$.browser.msie){
			var thisSheetRules = document.styleSheets[i].cssRules;
			for(var j = 0; j<thisSheetRules.length; j++){
				cssPile+= thisSheetRules[j].cssText;
			}
		}
		else {
			cssPile+= document.styleSheets[i].cssText;
		}
	}
	//parse string for image urls and load them into the DOM
	var allImgs = [];//new array for all the image urls  
	var imgUrls = cssPile.match(/[^\/]+\.(gif|jpg|jpeg|png)/g);//reg ex to get a string of between a "/" and a ".filename"
	if(imgUrls != null && imgUrls.length>0 && imgUrls != ''){//loop array
		var arr = jQuery.makeArray(imgUrls);//create array from regex obj	 
		$(arr).each(function(k){
			allImgs[k] = new Image(); //new img obj
			allImgs[k].src = settings.imgDir +'/'+ this;	
		});
	}
	return allImgs;
}

$(document).ready(function () {
	// swap out main promo bg
	var i = Math.floor(3*Math.random()) ;
	var bgImg = ['url(/images/bg/main-bg.png)','url(/images/bg/main-bg2.png)','url(/images/bg/main-bg3.png)']
	var promoUrl = ['/pub_works','/sheet_music','/listen'];
	
	$('body.home #main-content').css('background-image',bgImg[i]);
	$('#main-promo a').attr('href',promoUrl[i]);
	
	// Opens external links in new window
	$('.external').click(function () {
		$(this).attr('target','_blank');				   
	});
	
	// scroll back to top
	$('a.to-top').click(function() {
		 $.scrollTo(0,'slow');
		 return false;
	 });	
	
	// Append music player when listen page loads
	$('<embed src="/mp3/Adagio.mp3"></embed>').appendTo('#music-controller');
	
	// controls music player
	$('.mp3').click(function () {
		$('#music-controller').html('');
		var html = '<embed src="' + $(this).attr('href') + '"></embed>'; 
		$('#music-player h4').text('Now Playing: ' + $(this).attr('title'));
		$('#music-controller').append(html);
		return false;
	});
	
	// get query results for selected composition type
	$('#select-type').change(function () {
		if ($('#select-type').val() == 'chamber') {
			location.href = '/compositions';
		} else {
			location.href = '/' + $('#select-type').val();
		}
	});
});