// alias to jQuery library, function noConflict release control of the $ variable 
var $j = jQuery.noConflict();


/***************************************
   SETUP FADE MOVER SLIDER (FMS)
****************************************/
// array that keeps handles to slides
var g_slideHandleFMS = new Array();
// number of slides
var g_slideCountFMS = 0;
// true if slider have only one slide, 
// then we turn off animation
var g_animationAllowedFMS = true;
// actual displayed slide
var g_actualSlideFMS = 0;
// slider width and height
var FMS_WIDTH = 940;
var FMS_HEIGHT = 310;
// time interval betwen slide show
var FMS_INTERVAL = 5000;
// animation type
var FMS_MIX = 100; // randow slide move and fade
var FMS_FADE = 200; // only fade effect
var FMS_MOVE = 300; // only move effect
var g_animationTypeFMS = FMS_FADE;
var g_autoplayHandleFMS = null;
var g_pauseAutoPlayFMS = false;
var g_timerHandleHideDesc = null;
var g_handleDescPanel = null;

// function switch slides then animation is allowed
function faderMoverSliderAutoplay()
{
    if(g_pauseAutoPlayFMS)
    {
        g_autoplayHandleFMS = setTimeout(faderMoverSliderAutoplay, FMS_INTERVAL);
        return;
    }
    
    // fade betwean two slides
    function fade()
    {
       // get index of next slide
       var nextSlide = g_actualSlideFMS + 1;
       if(nextSlide >= g_slideCountFMS)
       {
           nextSlide = 0;
       }
       $j(g_slideHandleFMS[g_actualSlideFMS]).css("z-index", 10);
       $j(g_slideHandleFMS[nextSlide]).css("z-index", 9).css("left", 0);
                
      $j(g_slideHandleFMS[g_actualSlideFMS]).animate({opacity: 0.0}, 1000,
          // after fade down
          function()
          {
             // hide actual slide
             $j(this).css("left", FMS_WIDTH);
             g_autoplayHandleFMS = setTimeout(faderMoverSliderAutoplay, FMS_INTERVAL);            
          }
      );
      
      $j(g_slideHandleFMS[nextSlide]).animate({opacity: 1.0}, 1000);
      g_actualSlideFMS = nextSlide;        
    } // end of function fade
    
    // move slides on left
    function move()
    {
       // get index of next slide
       var nextSlide = g_actualSlideFMS + 1;
       if(nextSlide >= g_slideCountFMS)
       {
           nextSlide = 0;
       }
       $j(g_slideHandleFMS[g_actualSlideFMS]).css("z-index", 10);
       $j(g_slideHandleFMS[nextSlide]).css("z-index", 9).css("left", FMS_WIDTH).css("opacity", 1.0);
                
      $j(g_slideHandleFMS[g_actualSlideFMS]).animate({left: -FMS_WIDTH}, 100,
          // after fade down
          function()
          {
             // hide actual slide
             $j(this).css("left", FMS_WIDTH);
             g_autoplayHandleFMS = setTimeout(faderMoverSliderAutoplay, FMS_INTERVAL);            
          }
      );
      
      $j(g_slideHandleFMS[nextSlide]).animate({left: 0}, 1000);
      g_actualSlideFMS = nextSlide;     
    } // end of function move

   // check type of animation 
   if(FMS_FADE == g_animationTypeFMS)
   {
      fade();                               
   } // FMS_FADE 
   if(FMS_MOVE == g_animationTypeFMS)
   {
      move();                               
   } // FMS_MOVE
   if(FMS_MIX == g_animationTypeFMS)
   {
      var value = Math.random();
      
      if(value > 0.5)
      {
          fade();
      } else
      {
          move();
      }                               
   } // FMS_MOVE       

} // end of function faderMoverSliderAutoplay

// function initialize slider
function setupFaderMoverSlider()
{
    $j("#faderMoverSlider").each(
       function()
       {
          // get number of slides
          g_slideCountFMS = $j(this).find(".slide").length;
          // if there is less slides then 2, we turn off the animation
          if(g_slideCountFMS < 2)
          {
             g_animationAllowedFMS = false;
             return;
          }
          
          // collect to array all slides handle, and reverse slide z-index
          // leave first slide on screen, other hide behind right slider border
          for(var i = 0; i < g_slideCountFMS; i++)
          {
             var slideHandle = $j("#faderMoverSlider .slide:eq("+i+")");
             g_slideHandleFMS.push(slideHandle);
             // first on top, then second slide, etc.
             $j(slideHandle).css("z-index", 10 - i);            
             // leave first slide, other hide
             if(i > 0)
             {
                $j(slideHandle).css("left", FMS_WIDTH);
             }
          } // for
          
          
          // bind function to action hover for slides in mover/fader slider
          $j("#faderMoverSlider .slide").hover(
            // mouse hover on
            function()
            {
                  // clear timer which wait to hide slide description block
                  clearTimeout(g_timerHandleHideDesc);
                  // if description block was not hidden we must hide it
                  if(g_handleDescPanel != null)
                  {
                      // hide block in animation
                      $j(g_handleDescPanel).find('.slideFaderDescBack, .slideFaderDesc').stop().animate({bottom:-70, opacity: 0.0}, 600);  
                      // clear handle to block
                      g_handleDescPanel = null;                  
                  }
                  // block autoplaying of mover/fader slider
                  g_pauseAutoPlayFMS = true;
                  // save in global variable new description block handle, but only if exist
                  // and animate this block
                  if($j(this).find('.slideFaderDesc').length > 0)
                  {
                    g_handleDescPanel = this;
                    $j(this).find('.slideFaderDescBack').stop().animate({bottom:0, opacity: 0.8}, 600);
                    $j(this).find('.slideFaderDesc').stop().animate({bottom:0, opacity: 1.0}, 600);                   
                  }
                  
            },
            // mouse hover out
            function()
            {
                  // function definition which hide description block
                  function hideDescPanel()
                  {
                      $j(g_handleDescPanel).find('.slideFaderDescBack, .slideFaderDesc').stop().animate({bottom:-70, opacity: 0.0}, 600);  
                      g_handleDescPanel = null;
                  }
                  // if panel exist and was showed we fire up function to hide it
                  if(null != g_handleDescPanel)
                  {
                     g_timerHandleHideDesc = setTimeout(hideDescPanel, 800);
                  }
                  // allow to autoplay mover/fader slider
                  g_pauseAutoPlayFMS = false;                   
            }
          );
          
          // fire up slide autoplay
          g_autoplayHandleFMS = setTimeout(faderMoverSliderAutoplay, FMS_INTERVAL);      
       }
    );
} // end of function setupFaderMoverSlider