Popup Warning Box

Are you sure you want to continue?

[yowza]

I've looked everywhere for a way to create the standard browser warning box that has a question like "Are you sure you want to continue" and has yes and no buttons.

All my searches for popups return popup blockers, standard popups, etc.

Thanks.

[Bernard Marx]

if(confirm("Are you sure?"))
doThis()
else
doThat()

..but are you sure?

[Timotheos]

You want what is called a "message box". Try doing a search on javascript message box.