var speed = 4500;
    var nxtFacilityImg = 1;
    var nxtFoodImg = 1;
    // declare and load main image array
    var facilityImgAry = new Array(6);
    for (var i = 0; i < facilityImgAry.length; i++){
      eval("facilityImgAry[" + i + "] = '/images/rotation/facility_" + i + ".jpg'");
    }
    
    // declare and load food image array
    var foodImgAry = new Array(7);
    for (var i = 0; i < foodImgAry.length; i++){
      eval("foodImgAry[" + i + "] = '/images/rotation/food_" + i + ".jpg'");
    }
    
    setTimeout("switchFacilityImg()",speed)
    setTimeout("switchFoodImg()",speed + (speed / 2))
    
    function switchFacilityImg(){
      var obj = document.getElementById('facilityImg');
      obj.src = facilityImgAry[nxtFacilityImg];
  
      if (nxtFacilityImg == facilityImgAry.length - 1){
        nxtFacilityImg = 0;
      }else{
        nxtFacilityImg++;
      }

      setTimeout("switchFacilityImg()",speed)
    }
    
    function switchFoodImg(){
      var obj = document.getElementById('foodImg');
      obj.src = foodImgAry[nxtFoodImg];
  
      if (nxtFoodImg == foodImgAry.length - 1){
        nxtFoodImg = 0;
      }else{
        nxtFoodImg++;
      }

      setTimeout("switchFoodImg()",speed)
    }