Open a new window??

I have an asp app that runs in a "popup" window. When an error occurs I want to open another "popup" window to display the error.

The problem is when I run the code for opening a new window, it doesnt open a new window, instead my error page loads in the old window and my new window properties is not used. I need to open a completly new window for my error page

This is the code I use to open the window:

<SCRIPT LANGUAGE="JavaScript">
windowprops "height=100,width=100,location=no,scrollbars=yes,menubars=no,toolbars=no,resizable=no";

window.open("error.asp", "Esite", windowprops);
</SCRIPT>

How can I get this to work???