how to draw streamline

Hi,all
I  want to draw the wind streamline map,and I try many methods
described in the forum, but some are wind vectors not the streamline,
which is the serial contour line with arrow on the contour plot.

some one ever mentioned that there was a script sample on the web site
http://www.metvis.com.au/idl/
but i can't get access to it.

so if there anybody who can load that web site and give a copy of both
the script and the streamline image  for me?

I will appreciate your help!

wenfang