var displayedRoutes = new Array('10'); //an array of the route numbers to display at pageload
	
	var routesDowntown = new Array('10','11','15','17');
	var routesCornell = new Array('81','82','83','92');
	var routesSuburbs = new Array('13','14','30','31','32','51');
	var routesRural = new Array('20','21','36','37','40','41','43','52','53','65','67');
	var routesWeekend = new Array('70','72','74','75','77');
	var routesEvening = new Array('90','93');
	var routesSummer = new Array('22');

	
//-------------------- You do not need to edit anything below this line ------------------------------------------//
	
	var kmlDataURL = 'http://www.tcatbus.com/kml/';  //make sure it has the trailing slash
	var numberOfRoutes = 91; //upper limit of highest bus route
	var routeKmlData = new Array(numberOfRoutes);
	var toggleState = new Array(numberOfRoutes);
	var map;
	//var allRoutes = new Array('routesDowntown','routesCornell','routesSuburbs','routesRural','routesWeekend','routesEvening''routesSummer');

function buildMenu(routesName)
{
	var routesArray = eval(routesName);
	var divheadername = routesName+"Header";
	var displaySet = false;
	var div = document.getElementById(routesName);
	var html;
	
	html = "<ul>";
	if (routesArray.length>=1) {
		
		for (i=0;i<routesArray.length;i++) 
		{
			
			
			//looks for initially displayed routes
			for (g=0;g<displayedRoutes.length;g++) {
				if ((displayedRoutes[g] == routesArray[i]) && displaySet == false) {
					displaySet = true;
				}
			}
			
			
			html = html + '<li><input type="checkbox" value="1" onclick="toggleKml(\''+routesArray[i]+'\');" id="c'+routesArray[i]+'" /> <span class="route r'+routesArray[i]+'">Route '+routesArray[i]+'<\/span><\/li>';
		
		}
		html = html + "<\/ul>";
		div.innerHTML = html;
	} else {
		div.innerHTML = "<p>No Routes<\/p>";
	}
	
	//sets hidden if none of the route numbers are displayed initially
	if (displaySet==true) {
		expand(routesName);
	}
	

}


function initializeKmlData()
{
	var checkbox = null;
	
	//load default data into the array and display it
	for (i=1;i<=routeKmlData.length;i++) {
		for (g=0;g<displayedRoutes.length;g++) {
			if (i==displayedRoutes[g]) { //if match then load the KML data
				routeKmlData[i] = new GGeoXml(kmlDataURL+"route"+i+".kml");
				toggleState[i] = 1;
				map.addOverlay(routeKmlData[i]);
				checkbox = document.getElementById("c"+i);
				if (checkbox) {
					checkbox.checked = true;
				}
			}
		}
	}

}


function toggleKml(routeNumber) {
	if (!routeKmlData[routeNumber]) {
		routeKmlData[routeNumber] = new GGeoXml(kmlDataURL+"route"+routeNumber+".kml");
	}
  if (toggleState[routeNumber] == 1) {
  	map.removeOverlay(routeKmlData[routeNumber]);
    toggleState[routeNumber] = 0;
  } else {
    map.addOverlay(routeKmlData[routeNumber]);
    toggleState[routeNumber] = 1;
  }
 }
 
 function expand(thisDiv)
 {
 	var header = null;
 	changeMarker(thisDiv,'[+]','[-]');
 	new Effect.toggle(thisDiv,'slide',{duration:0.25});
 
 }