How to restrict opening multiple windows on the same link.

[Jyoti Vaskar]

I need help in modifying my application.
Currently in my application there is a link on which windows opens up even if the window is already open on the same link.
Its

onclick="openURLWindow('Email')"

on the link.

I want the functionality as it should not open the window if the window is already open.
How to do this in javascript?

[David Newton]

Keep track if the window's been opened? Check for a function/value defined in the window page (not sure what happens to JavaScript data from a window once the window's been closed)?

[Eric Pascarello]

The 2nd parameter of window.open is a name. https://developer.mozilla.org/En/DOM/Window.open

Eric