var picprew = 0;
var galerie_slideshow = false;
var galerie_slideshow_smer=-1;
var galerie_slideshow_cas=100;
var galerie_slideshow_pocet=0;

function galerie_slideshow_zmena (smer) {
     if (smer==galerie_slideshow_smer) {
       if (galerie_slideshow_cas==100) {
         galerie_slideshow_cas=20;
       } else {
         galerie_slideshow_cas=100;
       }
     } else {
        galerie_slideshow_cas=100;
        galerie_slideshow_start_stop(0)
        galerie_slideshow_start_stop(smer);
       
     }
}

function galerie_slideshow_start_stop(smer) {
     
     if (picprew==0 && galerie_slideshow) {
       var pos = $("#sekce_galerie_slideshow").css("background-position");
       if (pos == 'undefined' || pos == null) {
         pos = $("#sekce_galerie_slideshow").css("background-position-x"); 
       } else {
         pos = pos.split(" ")[0];
       }   
       pos=parseInt(pos);
       if (smer!=galerie_slideshow_smer) {
         $("#sekce_galerie_slideshow").stop();
         galerie_slideshow_smer=smer; 
       } else {
       }

       if (smer!=0) {
         galerie_slideshow = true;
 //       $("#sekce_galerie_slideshow").animate({backgroundPosition: ((galerie_slideshow_smer)*(182)+1*(pos))+"px -1px"},3000, function() {galerie_slideshow_start_stop(smer);});
         $("#sekce_galerie_slideshow").animate({backgroundPosition: ((galerie_slideshow_smer)*(7)+1*(pos))+"px 0px"},galerie_slideshow_cas, function() {galerie_slideshow_start_stop(smer);});

       }
     }
       
}

function slideshow(galerie,pocet) {
       galerie_slideshow_pocet=pocet;
       $("#sekce_galerie_slideshow").css('background','url(cms/img/layout/nic.gif)').css('background','url(cms/plugins/galerie_slideshow/galerie_slideshow_background.php?node='+galerie+')');
       //$("#sekce_galerie_slideshow").attr({'background: url(cms/plugins/galerie_slideshow/galerie_slideshow_background.php?node='+galerie+')'});       
       setTimeout("$('#sekce_gals').fadeIn();",1000);
       setTimeout("galerie_slideshow_start_stop(-1)",4000);
       
       $('.sekce_clona').animate({opacity: 0}, 500)
       $(".sekce_clona").fadeOut();

}
    
function vybrany_obrazek() {
  var pos = $("#sekce_galerie_slideshow").css("background-position");
  if (pos == 'undefined' || pos == null) {
    pos = $("#sekce_galerie_slideshow").css("background-position-x"); 
  } else {
    pos = pos.split(" ")[0];
  }   
  pos=parseInt(pos);
  pos=((pos*-1)+ window.event.offsetX);
  pom=(Math.floor((pos/$("#pic_sirka").val())))
  pos=pos-$("#pic_sirka").val()*(Math.floor((pos/$("#pic_sirka").val())))
  var offsetInfo = ""
  offsetInfo = "pom: " + pom + "\r"
  offsetInfo += "posun: " + pos + "\r"

  for (i=1; i<$("#pic_pocet").val(); i++) {
    if ($("#pic_"+i+"_zacatek").val()<pos && $("#pic_"+i+"_konec").val()>pos) {
//      alert(i);
      break;
    }
  }
  return i;
}

function galerie_preview () {

  galerie_slideshow_start_stop(0)
  pic=vybrany_obrazek();
  $('#galerie_preview, #galerie_preview_clona').fadeIn();
  $('#galerie_preview_pic').attr('src','gal/obr/obr_'+$("#pic_"+pic+"_id").val()+'.jpg');
}

function galerie_preview_close () {
  $('#galerie_preview, #galerie_preview_clona').fadeOut()
  setTimeOut("$('#galerie_preview_pic').attr('src','cms/img/nic.gif')",1000);

}