var interval = 2300;
var imageDir = "image-files/";
var Num = 0;

/*if (document.images){
var dir=imageDir;
    pic00= new Image();
  pic00.src=dir+"camara-008-b.jpg";
    pic01= new Image();
  pic01.src=dir+"cascara-012-a.jpg";
    pic1= new Image(); 
  pic1.src=dir+"cascara-018-b.jpg"; 
    pic2= new Image(); 
  pic2.src=dir+"cascara-011-a.jpg"; 
    pic3= new Image(); 
  pic3.src=dir+"hermann-wheaton-001-b.jpg";
    pic4= new Image(); 
  pic4.src=dir+"hermann-wheaton-024-a.jpg";
    pic5= new Image(); 
  pic5.src=dir+"hermann-wheaton-004-b.jpg";
    pic6= new Image(); 
  pic6.src=dir+"hermann-wheaton-018-a.jpg";
    pic7= new Image(); 
  pic7.src=dir+"mcdaniels-021-b.jpg";
    pic8= new Image(); 
  pic8.src=dir+"mcdaniels-022-a.jpg";
    pic9= new Image(); 
  pic9.src=dir+"mcdaniels-027-b.jpg";
    pic10= new Image(); 
  pic10.src=dir+"mcdaniels-028-a.jpg";
    pic11= new Image(); 
  pic11.src=dir+"mcdaniels-029-b.jpg";
   pic12= new Image(); 
  pic12.src=dir+"mcdaniels-030-a.jpg";
}*/
var numofsets=19;
var imageArray=new Array(numofsets)
for (i=0; i < numofsets; i++)
imageArray[i]=new Array(2)

//7
imageArray[Num][1] = imageDir + "camara-008-b.jpg";
imageArray[Num][2] = imageDir + "cascara-012-a.jpg";
Num++;
imageArray[Num][1] = imageDir + "cascara-018-b.jpg";
imageArray[Num][2] = imageDir + "cascara-011-a.jpg";
Num++;
imageArray[Num][1] = imageDir + "hermann-wheaton-001-b.jpg";
imageArray[Num][2] = imageDir + "hermann-wheaton-024-a.jpg";
Num++;
imageArray[Num][1] = imageDir + "hermann-wheaton-004-b.jpg";
imageArray[Num][2] = imageDir + "hermann-wheaton-018-a.jpg";
Num++;
imageArray[Num][1] = imageDir + "mcdaniels-021-b.jpg";
imageArray[Num][2] = imageDir + "mcdaniels-022-a.jpg";
Num++;
imageArray[Num][1] = imageDir + "mcdaniels-027-b.jpg";
imageArray[Num][2] = imageDir + "mcdaniels-028-a.jpg";
Num++;
imageArray[Num][1] = imageDir + "mcdaniels-029-b.jpg";
imageArray[Num][2] = imageDir + "mcdaniels-030-a.jpg";

//8
Num++;
imageArray[Num][1] = imageDir + "841 Claremont 006-a.jpg";
imageArray[Num][2] = imageDir + "841 Claremont 006-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "841 Claremont 009-a.jpg";
imageArray[Num][2] = imageDir + "841 Claremont 009-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "841 Claremont 015-a.jpg";
imageArray[Num][2] = imageDir + "841 Claremont 015-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "841 Claremont 019-a.jpg";
imageArray[Num][2] = imageDir + "841 Claremont 019-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "841 Claremont 028-a.jpg";
imageArray[Num][2] = imageDir + "841 Claremont 028-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "841 Claremont 004-a.jpg";
imageArray[Num][2] = imageDir + "841 Claremont 004-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "841 Claremont 013-a.jpg";
imageArray[Num][2] = imageDir + "841 Claremont 013-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "841 Claremont 021-a.jpg";
imageArray[Num][2] = imageDir + "841 Claremont 021-b.jpg";

//4
Num++;
imageArray[Num][1] = imageDir + "West Street Wheaton 001-a.jpg";
imageArray[Num][2] = imageDir + "West Street Wheaton 001-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "West Street Wheaton 003-a.jpg";
imageArray[Num][2] = imageDir + "West Street Wheaton 003-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "West Street Wheaton 011-a.jpg";
imageArray[Num][2] = imageDir + "West Street Wheaton 011-b.jpg";
Num++;
imageArray[Num][1] = imageDir + "West Street Wheaton 012-a.jpg";
imageArray[Num][2] = imageDir + "West Street Wheaton 012-b.jpg";

var totalImages = imageArray.length;
var spot = 0;
var sec;


function getNextSet() {
	if(spot==totalImages-1){
		spot=0;
	}else{spot = (spot+1);}
	var new_image = imageArray[spot];
	return(new_image);
}

function getPrevSet() {
	if(spot==0){
		spot=totalImages-1;
	}else{spot = (spot-1);}
	var new_image = imageArray[spot];
	return(new_image);
}

function prevImage(place,place2) {
	var new_image = getPrevSet();
	document.getElementById('pp').value = "Play";
	document.getElementById(place).src = new_image[1];
	document.getElementById(place2).src = new_image[2];
	document.getElementById('link1').href = new_image[1];
	document.getElementById('link2').href = new_image[2];
	
	clearTimeout(timerID);
}

function nextImage(place,place2,auto) {
	var new_image = getNextSet();
	if(auto==1){
		if(document.getElementById('pp').value == "Play"){
			document.getElementById('pp').value = "Pause";
			document.getElementById(place).src = new_image[1];
			document.getElementById(place2).src = new_image[2];
			document.getElementById('link1').href = new_image[1];
			document.getElementById('link2').href = new_image[2];
			var recur_call = "autoNextImage('"+place+"','"+place2+"')";
			timerID = setTimeout(recur_call, interval);
		}
		else if(document.getElementById('pp').value == "Pause"){
			document.getElementById('pp').value = "Play";
			clearTimeout(timerID);
		}	
	}
	else if(auto==0){
		document.getElementById('pp').value = "Play";
		
		document.getElementById(place).src = new_image[1];
		document.getElementById(place2).src = new_image[2];
		document.getElementById('link1').href = new_image[1];
		document.getElementById('link2').href = new_image[2];
		clearTimeout(timerID);
		
	}		
}
function autoNextImage(place,place2) {
	var new_image = getNextSet();
	document.getElementById(place).src = new_image[1];
	document.getElementById(place2).src = new_image[2];
	document.getElementById('link1').href = new_image[1];
	document.getElementById('link2').href = new_image[2];
	var recur_call = "autoNextImage('"+place+"','"+place2+"')";
	timerID = setTimeout(recur_call, interval);
}