/*
  @param: limit - numarul de imagini din slide
  @param: 5000 - numarul de miimi de secunda pentru fiecare imagine
*/

var sFile = [ ];

var limit = 4;

var increment = 0;

function changeImageNext()
{
  if(increment >= limit){increment = -1;}

  document.getElementById('billboard_image').src = sFile[++increment];
 
  stop_Int();
  start_Int();
}

function changeImagePrev()
{
  if(increment <= 0){increment = limit + 1;}

  document.getElementById('billboard_image').src = sFile[--increment];

  stop_Int();
  start_Int();
}

var intval = ""

function start_Int()
{
  if(intval == "")
  {
    intval=window.setInterval("changeImageNext()",5000)
  }
  else
  {
    stop_Int()
  }
}

function stop_Int()
{
  if(intval != "")
  {
    window.clearInterval(intval)
    intval = ""
  }
}

start_Int();