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

function inicia_combo()
{
   var combo = document.getElementById("lst_videos");

   combo.onchange = function()
   {
      carrega_video(this.value);
   };
}

function carrega_video(id)
{
   var dataPost = "";
   var ajax = null;
   var dvideo = document.getElementById("video");
   
   ajax = openAjax();

   ajax.open('POST', 'inc/carrega_video.php', true);

   ajax.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

   ajax.onreadystatechange = function()
   {
      if(ajax.readyState == 1)
      {
         dvideo.innerHTML = "Aguarde...";
      }

      if(ajax.readyState == 4 && ajax.status == 200)
      {
         var result = ajax.responseText;

         dvideo.innerHTML = result;
      }
   }

   dataPost = "id=" + id;

   ajax.send(dataPost);
}