//Preload Images
if (document.images)
{
    preloadimg1 = new Image();
    preloadimg1.src = "/images/core/NavButtonsHighlighted.png";
    preloadimg2 = new Image();
    preloadimg2.src = "/images/core/ClassesNavHighlighted.png";
    preloadimg3 = new Image();
    preloadimg3.src = "/images/core/AboutNavHighlighted.png";
    preloadimg4 = new Image();
}


var speed=2000;
var currnum=1;
var nextnum=2;

function cyclepics()
{
    if(document.location.pathname == '/index.php' || document.location.pathname == '/')
    {
      document.getElementById('img'+currnum).style.display='none';
      document.getElementById('img'+nextnum).style.display='inline';

      currnum++;
      nextnum++;

      if (nextnum==9)
      {
         nextnum=1;
      }

      if (currnum==9)
      {
         currnum=1;
      }

      setTimeout('cyclepics()',speed);
    }
}

function cycle_img_left(total_images)
{
   var img_src = document.getElementById('main_img').src;
   var curr_img = img_src;
   var curr_length = curr_img.length;
   var img_num_index = img_src.lastIndexOf("/");
   curr_img = curr_img.substr(img_num_index+1, 2);
   var img_num = parseInt(curr_img);
   var img_next = img_num - 1;
   var tot = parseInt(total_images);

   if(img_next < 1)
   {
     img_next = tot;
   }

   var img_ext_index = img_src.lastIndexOf(".");
   var img_ext = img_src.substr(img_ext_index, 4);
   img_src = img_src.substr(0,img_num_index+1);

   document.getElementById('main_img').src = img_src+img_next+img_ext;
}

function cycle_img_right(total_images)
{
   var img_src = document.getElementById('main_img').src;
   var curr_img = img_src;
   var curr_length = curr_img.length;
   var img_num_index = img_src.lastIndexOf("/");
   curr_img = curr_img.substr(img_num_index+1, 2);
   var img_num = parseInt(curr_img);
   var img_next = img_num + 1;
   var tot = parseInt(total_images);

   if(img_next > tot)
   {
     img_next = 1;
   }

   var img_ext_index = img_src.lastIndexOf(".");
   var img_ext = img_src.substr(img_ext_index, 4);
   img_src = img_src.substr(0,img_num_index+1);

   document.getElementById('main_img').src = img_src+img_next+img_ext;
}




window.onload=function()
{
  cyclepics();
}