Just like what the groups here on Google use, you can use the JavaScript event "onBeforeUnload" to look for changes
http://www.google.com/search?q=javascript+onbeforeunload On Dec 2, 9:15 am, Sridhar <[EMAIL PROTECTED]> wrote: > Hi, > > we are trying to give a feedback to the user if the user has > changed some values in the form and tries to close the form with out > saving the changes. is there a plug-in that can check this? or do I > have to loop-through each control and check if the value has changed > by comparing the value with the stored value in a hidden variable? If > there is a standard way to do this, please let me know. we are using > asp.net to create the forms > > Thanks, > sridhar.