// List image names without extension
var myImg= new Array()
  myImg[0]= "pg01";
  myImg[1]= "pg02";
  myImg[2]= "pg03";
  myImg[3]= "pg04";
  myImg[4]= "pg05";
  myImg[5]= "pg06";
  myImg[6]= "pg07";
  myImg[7]= "pg08";
  myImg[8]= "pg09";
  myImg[9]= "pg10";
  myImg[10]= "pg11";
  myImg[11]= "pg12";
  myImg[12]= "pg13";
  myImg[13]= "pg14";
  myImg[14]= "pg15";


// Tell browser where to find the image
myImgSrc = "/PGmagic/";

// Tell browser the type of file
myImgEnd = ".jpg"

var i = 0;

// Create function to load image
function loadImg(){
  document.imgSrc.src = myImgSrc + myImg[i] + myImgEnd;
}

// Create link function to switch image backward
function prev(){
  if(i<1){
    var l = i
  } else {
    var l = i-=1;
  }
  document.imgSrc.src = myImgSrc + myImg[l] + myImgEnd;
}

// Create link function to switch image forward
function next(){
  if(i>15){
    var l = i
  } else {
    var l = i+=1;
  }
  document.imgSrc.src = myImgSrc + myImg[l] + myImgEnd;
}

// Load function after page loads
window.onload=loadImg;