CSS: Problem in IE7 with a floating element. Clearing it doesn't work

I have this page.

The register form should be 开发者_开发知识库on the right on the sign in form, but it doesn't...

I added "clear:right" to the registering div, but it doesn't work..

Any idea?

Regards

Javi

---

Increase width of div#contenedor_formularios.