get page and explode

get page and explode

Dear people ,

i am making a chrome extension and i need to explode this :
<a href="http://www.one2xs.com/profiel/bekijk?gebruiker={a username}" > {a u sername} </a> </span> <br /> <span class="topic-userstatus">
i need to get that url open explode it and get the number that stand before the word post en set that to the variable that is the username that stand in the get.
is their a way that i can get the username and open the url explode it en write it in the page?

Thanks a lot