$('.box').each(function() {
            rescaleRelative(this, 
              'top', 
                event.clientY - 
                containerTopOffset - 
                parseFloat(this.css('height')) / 2,
              percent);
            rescaleRelative(this, 
              'left', 
                event.clientX - 
                containerLeftOffset - 
                parseFloat(this.css('width')) / 2, 
              percent);