Thanks for your reply Pranav. I've tried to remove the onkeyup event and create the autocompleter instance only once as you suggested. This is how I do it.
<body onload="trigger()"> But the problem still persists. -- You received this message because you are subscribed to the Google Groups "Prototype & script.aculo.us" group. To post to this group, send email to prototype-scriptacul...@googlegroups.com. To unsubscribe from this group, send email to prototype-scriptaculous+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en.