I want to write simple javascript, something for collecting visitor info and the script needs JQuery to run.

Then I want to provide that script, so other websites can include/load it from me externaly, using script src="my\_web/my\_javascript.js"...

My dilemma is how to handle JQuery part, how to include JQuery, I don't know wheather the site that will include it has JQuery loaded or not, and if I force loading JQuery I don't want to cause conflicts or any problems on the site that uses my script.