Put it in exactly like this (except remove the space after javas):

javas cript:void(window.open('http://www. ExternalSite.com'));

It may put the http:// part back on if you go to re edit, but the above works.

John,

It does not work.  When you use the void synatx it still produces a JS error, typically something to the effect of a missing semicolon.  The http:// is added at save time which means the value stored in the DB contains the http://.  This is simply an invalid URL and would not be processed.

As it was put as well, you cannot remove the http:// from the DB value either as it would assume it's trying to be a file link of some sort.

If it was removed from the code to force the saving of the http:// prefix to the database, do you suppose it would process whatever it was given anyway?

Strange... I just rerun the update to 4.5.5 (on already 4.5.5 portal) and now it works just fine... Very interesting... Thank you , John!