Template Parser Acting Stupid...

[Trek]

I posted this on vb.com but realized I should probably be asking here.

Anyone know why I would be getting this error:

Parse error:  syntax error, unexpected '[' in /home/XXXXXXXXXXXX/includes/adminfunctions_template.php(4597) : eval()'d code on line 72

When I have this text in a template:

function removeElement (e) {
    var li = e.parentNode;
    li.parentNode.removeChild(li);
}

I've narrowed it down to just the one line causing this template not to save:

var li = e.parentNode;

If you create a new template and just put the above function in it and try to save, you'll see what I mean.

Thanks for your help!