3 tree.Alpha = function (val) {
6 tree.Alpha.prototype = {
8 return "alpha(opacity=" +
9 (this.value.toCSS ? this.value.toCSS() : this.value) + ")";
11 eval: function (env) {
12 if (this.value.eval) { this.value = this.value.eval(env) }
17 })(require('../tree'));