//Initialize functions
$(document).ready(function() {
 	galleryImages();
	swapTabContent("tabOne");
	hasjs();
	expandCollapse();
	anchors.doPopups();
 });

  /* =================================================================== */
 // Show these elements only if JS is enabled
 
 function hasjs() {
 	$("form#filter").show();
	$("form#selectProjects").show();
 }
 
 
 /* =================================================================== */
//Markets - Gallery rollover images.  Name of the image should correspond to ID plus "-number"
function galleryImages() {
	var projectName = $("#galleryImg img").attr("id");
	
	$("#galleryNums a").hover(
		function () {
	      		var imageNum = $(this).html();
			$("#galleryImg img").attr("src", "../img/content/gallery/"+projectName+"-"+imageNum+".jpg");
	    	}, 
		function () {
	      		$("#galleryImg img").attr("src","../img/content/gallery/"+projectName+"-1.jpg");
		}
	);
	return false;
}

/* =================================================================== */
// Tab functionality
function swapTabContent(sName) {
	var sActiveTabClass = "selected";	
	
	$("div.tabContent").hide();
	$("div#" + sName +"Content").show();
	
	$("ul#tabs li a").click( function () {
		var sName = $(this).attr("id");
		
		$("ul#tabs li").removeClass(sActiveTabClass);
		$("div.tabContent").hide();
		$("div#" + sName +"Content").show();
		$("#"+sName).parent().addClass(sActiveTabClass);
		
	});
	return false;
}

/* =================================================================== */
//Filter Markets
function filter(sService) {
	var sDisabledClass = "disabled";
	
	//define arrays.  corresponds to "value" in dropdown menu on markets/index.aspx page.  Value/ID's listed will be shown when selected.
	switch (sService) {
	case "Architecture":
		var sService = ["harvard-university", "yale-university", "columbia-university", "aviation-maintenance-complex", "berkshire-visitor-center", "commonwealth-superior-court", "mbta-accessibility-improvement", "conn-dot-bus-stations", "arched-bridge-me", "ma-arng-hq", "lifeguard-station", "aviation-support-facility", "readiness-center"];
		break;
		
	case "Asset management":
		var sService = ["framingham"];
		break;
		
	case "Bridges":
		var sService = ["arched-bridge-me"];
		break;
		
	case "Civil/site engineering":
		var sService = ["harvard-university", "columbia-university", "aviation-maintenance-complex", "berkshire-visitor-center", "commonwealth-superior-court", "mbta-accessibility-improvement", "conn-dot-bus-stations", "arched-bridge-me", "ma-arng-hq", "readiness-center", "brown-university"];
		break;
		
	case "Construction administration":
		var sService = ["lifeguard-station", "readiness-center"];
		break;
		
	case "Deconstruction/demolition":
		var sService = ["harvard-university", "commonwealth-superior-court", "lifeguard-station"];
		break;
		
	case "Energy":
		var sService = ["yankee-gas", "anaerobic-digester", "spectra-energy"];
		break;
		
	case "Environmental sciences":
		var sService = ["harvard-university", "columbia-university", "fields-point", "cambridge-fresh-pond-parkway", "berkshire-visitor-center", "commonwealth-superior-court", "lifeguard-station", "aviation-support-facility"];
		break;
		
	case "GIS":
		var sService = ["harvard-university", "framingham", "readiness-center"];
		break;
		
	case "Highways & roads":
		var sService = ["cambridge-fresh-pond-parkway"];
		break;
	
	case "Master planning":
		var sService = ["harvard-university", "yale-university", "columbia-university", "ma-arng-hq", "lifeguard-station", "readiness-center", "brown-university", "umass"];
		break;
		
	case "Materials management":
		var sService = ["harvard-university", "yale-university", "columbia-university", "brown-university", "umass", "stanford-university"];
		break;
		
	case "Project management":
		var sService = ["harvard-university", "yale-university", "columbia-university", "framingham", "fields-point", "aviation-maintenance-complex", "berkshire-visitor-center", "commonwealth-superior-court", "mbta-accessibility-improvement", "conn-dot-bus-stations", "yankee-gas", "anaerobic-digester", "spectra-energy", "ma-arng-hq", "lifeguard-station", "aviation-support-facility", "readiness-center", "umass", "stanford-university"];
		break;
		
	case "Structural engineering":
		var sService = ["aviation-maintenance-complex", "berkshire-visitor-center", "commonwealth-superior-court", "mbta-accessibility-improvement", "conn-dot-bus-stations", "arched-bridge-me", "ma-arng-hq", "lifeguard-station", "aviation-support-facility", "readiness-center"];
		break;
		
	case "Sustainable design":
		var sService = ["harvard-university", "cambridge-fresh-pond-parkway", "berkshire-visitor-center", "mbta-accessibility-improvement", "anaerobic-digester", "spectra-energy", "ma-arng-hq", "lifeguard-station", "aviation-support-facility", "readiness-center", "brown-university"];
		break;

	case "Utilities and infrastructure":
		var sService = ["harvard-university", "columbia-university", "mbta-accessibility-improvement", "yankee-gas", "anaerobic-digester", "umass", "stanford-university"];
		break;
		
	case "Water resources / wastewater":
		var sService = ["framingham", "fields-point", "cambridge-fresh-pond-parkway", "aviation-support-facility"];
		break;
		
	case "View all":
		var sService = ["harvard-university", "yale-university", "columbia-university", "framingham", "fields-point", "cambridge-fresh-pond-parkway", "aviation-maintenance-complex", "berkshire-visitor-center", "commonwealth-superior-court", "mbta-accessibility-improvement", "conn-dot-bus-stations", "arched-bridge-me", "yankee-gas", "anaerobic-digester", "spectra-energy"];
		break;
	default:
	 	
	}
	
	//gray out all divs
	$(".row div").addClass(sDisabledClass);
	
	//show headers
	$(".headerRow div").removeClass(sDisabledClass);
	
	//show all the items in the array
	for (var i=0; i < sService.length; i++) {
		$("div#"+ sService[i]).removeClass(sDisabledClass);
	};
}

/* =================================================================== */
//Careers - job list expading functionality

function expandCollapse() {
/* 	$("#availableJobs li ul").hide();
	
	$("#availableJobs li h3").toggle(
		function () {
			$(this).parent().addClass("selected");
			$("#availableJobs li ul").show();
		},
		function () {
			$(this).parent().removeClass("selected");
			$("#availableJobs li ul").hide();
		}
	);*/
};


/* =================================================================== */
// function to add events crossbrowser
// from: http://www.dustindiaz.com/rock-solid-addevent/
// uncomment the EventCache lines if using EventCache function from code lib
function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}

/* =================================================================== */

// use only with addEvent function
// this is here to clear the event cache to prevent memory leaks
// for more info:  http://novemberborn.net/javascript/event-cache
var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();
addEvent(window,'unload',EventCache.flush);

/* =================================================================== */

//call like cssjs('add',containerOBJ,classname);
	function cssjs(a,o,c1,c2){
		switch (a){
			case 'swap':
				o.className=!cssjs('check',o,c1)?o.className.replace(c2,c1):o.className.replace(c1,c2);
			break;
			case 'add':
				if(!cssjs('check',o,c1)){o.className+=o.className?' '+c1:c1;}
			break;
			case 'remove':
				var rep=o.className.match(' '+c1)?' '+c1:c1;
				o.className=o.className.replace(rep,'');
			break;
			case 'check':
				return new RegExp("(^|\\s)" + c1 + "(\\s|$)").test(o.className)
			break;
		}
	}

/* =================================================================== */

// various link functionality - popups, external, onstate
// various link functionality - popups, external, onstate
// original script taken from Jeremy Keith
// dependencies: cssjs(), addEvent()
var anchors = {
	a : Object,
	doPopups : function() {
		if (!document.getElementsByTagName) return false;
		var links = document.getElementsByTagName("a");
		for (var i=0; i < links.length; i++) {
			var anchor = links[i];
			if (anchor.getAttribute('href') && anchor.rel.match('external')) {
				anchor.onclick = function() {
					return anchors.openWin(this,"","");
				}
				cssjs('add',anchor,'external');
			}
		     if (cssjs('check',anchor,'pdf')) {
				anchor.onclick = function() {
					return anchors.openWin(this,"pdfWin","width=700, height=550,toolbar=no");
				}
		    }
		  
		}
	},
		openWin : function(o,winName,params) {
			var win=window.open(o.href,"" + winName + "","" + params + "");
			win.focus();
			return false;
		}
}