I know Sibyl and I went nuts the first time I tried it.
The lines in the portal block look like this
<input type="radio" name="style" value="lightblue" onclick='changeStyle(this.value); parent.frames["top"].changeStyle(this.value)'> Blue
I think this is what it should look like. I went over to Sibyls site and took a look at her codes as she has them.
<input type="radio" name="style" value="blue" onclick='changeStyle(this.value); parent.frames["top"].changeStyle(this.value)'> Blue
Change them over and see how it works.
Take a look at this, I think this is the problem. See the difference between the two?