I usually use http://www.w3schools.com/browsers/browsers_stats.asp as a rough guide. It shows 94% JavaScript on, 6% off for January 2007.
Be a little careful generalizing this number as applied to shopping cards.
In many cases, JaveScript is off for people coming from behind corporate firewalls and these are highly qualified purchasers. Urb Dr. Urban A. LeJeune, President E-Government.com 800-204-9545 _______________________________________________ New York PHP Community Talk Mailing List http://lists.nyphp.org/mailman/listinfo/talk NYPHPCon 2006 Presentations Online http://www.nyphpcon.com Show Your Participation in New York PHP http://www.nyphp.org/show_participation.php