code: function setParallaxTransform(el, progress) {
              el = $(el);
              var p, pX, pY;
              var rtlFactor = s.rtl ? -1 : 1;
          
              p = el.attr('data-swiper-parallax') || '0';
              pX = el.attr('data-swiper-parallax-x');
              pY = el.attr('data-swiper-parallax-y');
              if (pX || pY) {
                  pX = pX || '0';
                  pY = pY || '0';
              }
              else {
                  if (s.isHorizontal()) {
                      pX = p;
                      pY = '0';
                  }
                  else {
                      pY = p;
                      pX = '0';
                  }
              }
          
              if ((pX).indexOf('%') >= 0) {
                  pX = parseInt(pX, 10) * progress * rtlFactor + '%';
              }
              else {
                  pX = pX * progress * rtlFactor + 'px' ;
              }
              if ((pY).indexOf('%') >= 0) {
                  pY = parseInt(pY, 10) * progress + '%';
              }
              else {
                  pY = pY * progress + 'px' ;
              }
          
              el.transform('translate3d(' + pX + ', ' + pY + ',0px)');
          }
docs: /*=========================
  Parallax
  ===========================