javascript a function to replace some words on my webpage
<p>i need a javascrip that replaces some words on my web page with other words. so  when the page loads...some words that i specify get replaces by something else</p>

<p>so like  if  "hello is found replace with "hi"
if "one" is found replace with "two" etc</p>

<p>how can i do that?</p>
