Visual Alert

i used macromedia 2004 mx, asp.net and access database to make a simple web application to keep track of the phone call messages recieved in my company. In the main page i have a dataset to display all records of the call that have not been acknowledged yet, the page refreshes everyone 1 min to display any new records added .

if there is a way to make a visual alert like a popup message or a window to open up to inform you that a new record was added instead looking all the time at the page to see if a new record pops up.