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<DIV><FONT face=Verdana color=#0000ff size=2> Hi,
all!</FONT></DIV>
<DIV><FONT face=Verdana color=#0000ff size=2> suppose a
src string like this: how are you today ? "are you ok?" you are
welcome!</FONT></DIV>
<DIV><FONT face=Verdana color=#0000ff size=2> I want
this string to be : how are hello
today? "are you ok?" hello are welcome!</FONT></DIV>
<DIV><FONT face=Verdana color=#0000ff size=2> </FONT></DIV>
<DIV><FONT face=Verdana color=#0000ff size=2> I want to
use just a regex express to do it. but i cant prevent from "are you ok?" being
changed to be "are hello ok?".</FONT></DIV>
<DIV><FONT face=Verdana color=#0000ff size=2> I
want to use the *Look ahead* or *Look behind* to solve it. can I ?</FONT></DIV>
<DIV><FONT face=Verdana color=#000000 size=2></FONT> </DIV>
<DIV>Yang.liana</DIV>
<DIV>Aug/23/2006</DIV></FONT></DIV></FONT></BODY></HTML>