function loadProductPage(){
  
  var nav1 = document.getElementById('tertnav').style;
  var dispnew = document.getElementById('productImage').style;
  var dispold = document.getElementById('productTable').style;
  
  var backnav = document.getElementById('backnav').style;
  
  nav1.display = "none";
  dispnew.display = "none";
  dispold.display = "block";
  
  backnav.display = "block";
  
}
function loadProductImage(pic){
  
  var nav1 = document.getElementById('tertnav').style;
  var dispnew = document.getElementById('productImage').style;
  var dispold = document.getElementById('productTable').style;
  
  var backnav = document.getElementById('backnav').style;
  
  nav1.display = "block";
  dispnew.display = "block";
  dispold.display = "none";
  
  backnav.display = "none";
  
  rotatePic(pic);
  
}
var crntPict = 0;
//var picTotal;
function rotateNext(){

  //alert("the current pic is "+crntPict);
  if (crntPict < picTotal) {
    
    crntPict++;
    //alert("1and now current pic is "+crntPict);
    
  } else {
    
    crntPict = 1;
    //alert("2and now current pic is "+crntPict);
  }

  rotatePic(crntPict)

}
function rotatePic(tpic){
  
  for (j=1; j<=picTotal; j++){
    
     if (gpic = document.getElementById("pic"+j).style)
     {
      
        gpic.display = "none";
     }

  }
  crntPict = tpic;
  tpic = "pic"+tpic;

  if (npic = document.getElementById(tpic).style)
  {
     npic.display = "block";
  }
}