External link within WordPress frame

Hi people,

This thing has been driving me nuts.

This is the website I want to update :
SymbiosisHR.net

I want to make a page “button”, AKA a “tab”, that would link to an external webpage.
More clearly, when a visitor clicks on the “JOB OFFER” button, he gets sent to an external site (namely, our TALEO careers site)

So I found this :

https://en.forums.wordpress.com/topic/change-a-page-to-an-external-link?replies=12

2 problems with that

1) When I do it, the link does work but the text of the tab is not aligned anymore with the other tabs.
Any ideas why ?

2) I loose the footers and headers.
What I’d really like would be for the external page to open in the “blog frame”, that is between the footer and headers. No need for the sidebar though.

Please help !!!! I’ve been looking intensively on the web for a fix but can’t find anything relevant and I’ve got pressure to make this thing work ASAP.