fix ajax link handler
fix ajax link handler

Previously it would use the element that was clicked, instead of the
parent element with the actual href. This fixes it to use the element
with the click event bound.

The radiothon banner link was also changed back to not use $.each.

wuvt/wuvt-site,wuvt/wuvt-site,wuvt/wuvt-site,wuvt/wuvt-site