Issue with javascript launched windows

Hello -

I recently completed the “Javascript Pop-up Windows” tutorial for flash 8. Everything works as planned. That is, if your using the same browser as me, which happens to be Netscape 8. In my site, I have a button that when pressed opens a little window. For some reason Internet Exlporer wont allow the window to open. Instead an error pops up saying there’s an “invalid Argument” on so and so line. Here’s the code (in the HTML page) where the error is said to be:

  Openwin = this.open(page,"Trance-state.com", "toolbar=no, menubar=no, scrollbar=no, location=no, width=150, height=150, top=370, left=740");

the entire code is:

<SCRIPT LANGUAGE="JavaScript">

              var newwin;

              function popup(winurl,winname,winfeatures)
              {
                      newwin = window.open(winurl,winname,winfeatures);
                      if(javascript_version > 1.0)
                      {
                       setTimeout('newwin.focus();',250);
                      }
              }
              
                     
              
              function launch(page){
  Openwin = this.open(page,"Trance-state.com", "toolbar=no, menubar=no, scrollbar=no, location=no, width=150, height=150, top=370, left=740"); 


}
               </SCRIPT>

If anyone knows why this is, I would greatly appreciate some help!