if  (typeof slideCntr == 'undefined') { 
  var slideCntr = 0;
}

var thumbsLeft = 0;
var slideStep = 108;
var animationSpeed = 400;

$(document).ready(function(){
  if (slideCntr > 0) { 
   var tmp = slideCntr * slideStep * -1;
   $("div#belowimg div#thumbs").animate({marginLeft: tmp}, 100);
  }
  if (slideCntr == 0) { 
    $("div#belowimg a#prev_arrow_large").hide();
  }
  $("div#belowimg").show('fast');
});


function thumbsNext() { 
  slideCntr += 1;
  thumbsLeft = slideCntr * slideStep * -1;
  $("div#belowimg div#thumbs").animate({marginLeft: thumbsLeft}, animationSpeed);
  if (slideCntr == 1) { 
    $("div#belowimg a#prev_arrow_large").fadeIn('fast');
  }
  if (slideCntr == totalPhotos - 3) { 
    $("div#belowimg a#next_arrow_large").fadeOut('fast');
  }
}

function thumbsPrev() { 
  slideCntr += -1 ;
  if (slideCntr == 0) { 
    $("div#belowimg a#prev_arrow_large").fadeOut('fast');
  }
  thumbsLeft = slideCntr * slideStep * -1;
  $("div#belowimg div#thumbs").animate({marginLeft: thumbsLeft}, animationSpeed);

  if (slideCntr == totalPhotos - 4) { 
    $("div#belowimg a#next_arrow_large").fadeIn('fast');
  }
  
}