Getting Node text with jQuery

Getting Node text with jQuery

Hello all!
I need a little advice please.
I have a page with one button (Push) and another 2 fields (Number, Link)
I want when i push the button the page to open the Link page (it's html local files) and highlight the word at the Number position
I want to escape tag elements
En example
if i have Number = 5 and Link = myTest.html
in myTest.html i have
This <font color="red"> is a </font> good <b><u>example</u></b>
i want to highlight the example word
Many thanks