Fx.Elements = new Class( {
   Extends : Fx.CSS, initialize : function(B, A) {
      this.elements = this.subject = $$(B); this.parent(A); }
   , compute : function(G, H, I) {
      var C = {
         }; for(var D in G) {
         var A = G[D], E = H[D], F = C[D] = {
            }; for(var B in A) {
            F[B] = this.parent(A[B], E[B], I); }
         }
      return C; }
   , set : function(B) {
      for(var C in B) {
         var A = B[C]; for(var D in A) {
            this.render(this.elements[C], D, A[D], this.options.unit); }
         }
      return this; }
   , start : function(C) {
      if(!this.check(arguments.callee, C)) {
         return this; }
      var H = {
         }
      , I = {
         }; for(var D in C) {
         var F = C[D], A = H[D] = {
            }
         , G = I[D] = {
            }; for(var B in F) {
            var E = this.prepare(this.elements[D], B, F[B]); A[B] = E.from; G[B] = E.to; }
         }
      return this.parent(H, I); }
   }
);