Subscripts ans superscripts at http://jimhumble.biz/

I'm not sure if it's a proper place for that post as it's addressed to webmasters/admins of the site jimhumble.biz/ . I can see that site is constantly improved, contents better organized and easily accesible. But there's one thing that could make that site more pleasure to read, especially when it comes to the chemistry. For example ClO2 would be easier to read in the following form ClO₂ or Cl^- instead of Cl-.
That site is written in simple HTML and webmaster can write it as:
ClO₂ or Cl^-.

Well, the webmaster of that site is on here, but I can't guarantee he will see it.

Tell mi his/her nick her or via private message so I'll sent a message to that person