> The following web sites can not be copied please
> <http://msdn.microsoft.com/en-us/library/default.aspx>
> 2 > <http://www.w3schools.com/>

msdn uses onclick="javascript(string)"
httrack only has a simple js parser, it won't be able to handle it.
w3s forbids robots (like httrack) via robots.txt (options->spider)