new Menu item modal window

Hi
can some one point me in the right direction
i would like to create a extra menu item on the left hand side nav bar to a external url that opens in a modal window
but not sure how to do it

many thanks

Currently, there is no such built-in feature. However, you may open a page in a new tab browser (not modal window). Simply put the following code in “MenuItem_Adding” server event:

if ($item->Url == “home.php”) { // assume you have a menu item that its url point to home.php file
$item->Url = “http://www.google.com”; // then change it to Google website
$item->Target= “_blank”; // open in a new tab browser
}

You may try the follows: