$(function() {	

   $('.btn.buy').hover(
	 function () {
		 //show its BUY BOX
		 $('.module.buybox', this).fadeIn(300);
           }, 
	 function () {
		 //hide its BUY BOX
		 $('.module.buybox', this).hide();			

  });


  $('.module.buybox').each(
	 function(){
		 var h = ($(this).height())/2 -5;
		$(this).css('top','-'+h+'px');
		$('.triangle', this).css('margin-top', (h-5)+'px');
  });



});