How to make menu items open in a new window.

This method uses some jquery. There is an alternative method described at Menu

Insert the following code at the bottom of templates/footer.tpl (which is a convenient place to put it).

The option item that you want to open in a new window in the following example is 1318, corresponding to option ID 1318 in admin menus

{jq}
$('.option1318 a').click( function() {
window.open( $(this).attr('href') );
return false;
});
{/jq}

You can specify multiple options to be affected as follows (in this case option 1315 and 1318)

{jq}
$('.option1318 a,.option1318 a').click( function() {
window.open( $(this).attr('href') );
return false;
});
{/jq}