gistfile1.txt

     var transformer = (function() {
        var m00 = 1, m10 = 0, m20 = 0, m30 = 0,
            m01 = 0, m11 = 1, m21 = 0, m31 = 0,
            m02 = 0, m12 = 0, m22 = 1, m32 = 0,
            m03 = 0, m13 = 0, m23 = 0, m33 = 1;
            
        return {
          scale: function(scale) {
            m00 *= scale;
            m11 *= scale;
            m22 *= scale;
          },
          
          translate: function(x, y) {
            m03 += x;
            m13 += y;
          },
          
          translateZ: function(z) {
            m23 += z;
          },
          
          applyMatrix: function($) {
            $.css('-webkit-transform','matrix3d('+m00+','+m10+','+m20+','+m30+',\
                                                '+m01+','+m11+','+m21+','+m31+',\
                                                '+m02+','+m12+','+m22+','+m32+',\
                                                '+m03+','+m13+','+m23+','+m33+')');
          },
          
          getTransformedDimensions: function(element) {
            var top = element.offsetTop;
            var left = element.offsetLeft;
            var width = window.parseInt(window.getComputedStyle(element).width, 10);
            var height = window.parseInt(window.getComputedStyle(element).height, 10);
            
            return {
              top: (top + m03) * m00,
              left: (left + m13) * m00,
              width: width * m00,
              height: height * m00
            }
          }
        }
      })();