rem: }.extend(options || {}); 
add: }, options || {}); 
context:   setOptions: function(options) {    this.options = {      transition: Effect.Transitions.sinoidal,      duration:   1.0,   // seconds      fps:        25.0,  // max. 100fps      sync:       false, // true for combining      from:       0.0,      to:         1.0    }.extend(options || {});  },
meta: 1514	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1514/16669774903dd7bfaaf1bf8f0c72e49ebaeffeeb/effects.js/buggy/actionpack/lib/action_view/helpers/javascripts/effects.js