how use regex to get from specific point to end of text?

how use regex to get from specific point to end of text?

I want to know what is the proper regular expression for that :
In an action unprecedented during 12 years of war in Afghanistan, the
commandant of the Marine Corps is firing two top generals. See why:
<a onmouseover="LinkshimAsyncLin.swap()>Generals fired over Taliban attack
</a><br/>security.blogs.cnn.com<br/>There were three investigations of the
incident.
I want to do the following :
give me string starting of a tag which contains
onmouseover="LinkshimAsyncLin.swap() in any position at properties area ..
and end with the end of the remain string .. i mean from this a tag to end
of the string
MY TRY :-
i used this pattern :
<a[^>]*?onmouseover\\s*=\\s*['\"]([^'\"]*?)['\"][^>]*?/?>
it got successfully this part <a onmouseover="LinkshimAsyncLin.swap()> i
want to get also all remain tags and text to the end point
Note :
My friends, I know that using regex with html tag is very bad practice and
i already have red that alot but i want that for special case
thank in advance :)