A JavaScript newbie question

Internet Explorer doesn't like this for some reason, Firefox and Opera do.
It's a JavaScript pop up thingy, and IE gives me an invalid argument error, referring to the window.open line.

This is in the Head section:

Code:

<script type="text/javascript" language="JavaScript">

function PopUp(url){
window.open(url, "John 5 extra info", "width=750, height=500, scrollbars=yes, resizable=yes")
}

</script>

And this is in the body:

Code:

<a href="javascript:PopUp('page.html')">here</a>

I tried searching the web but I can't figure out what's wrong. Thanks in advance.

 

The window.open line is missing a semicolon at the end.

Code:

<script type="text/javascript" language="JavaScript">

function PopUp(url){
window.open(url, "John 5 extra info", "width=750, height=500, scrollbars=yes, resizable=yes")[B][COLOR="Red"];[/COLOR][/B]
}

</script>

 

Still doesn't work.