i want to open a popup window when user leaves tab or closes browser, the available option with me was window.open, but with that, it asks for popup blocker, if it is not enabled, i tried every possible ways to ignore popup-blocker but in vain, i tried onunload, onbeforeunload, but it does not works, i also tried to use modal dialog, before the tab/browser, i used it in onbeforeunload event, but it shows a browsers alert message, which i dont want, my simple requirement is, i need a popup window (if possible) or modal dialog, on the close of tab/browser, but should ignore popup-blocker, i guess with modal dialog, i dont need to worry about popup-blocker, because that wont be the new window, but how i would be handling it, while user closes tab/browser. If any of the above option is not possible, can anyone help me with any other possible alternative, or helpful articles.