How to open a window with a specific outer height on Internet Explorer

Unfortunately, the window.open function on Internet Explorer doesn't support the outerWidth and outerHeight parameters. The function below does the job – but is there really no easier way?

function openPopup(url, width, height, params) {

 var w
 if (params)
  w = window.open('about:blank', '_blank', params)
 else
  w = window.open('about:blank', '_blank')

 w.document.open()
 w.document.writeln('<script>')
 w.document.writeln('window.resizeTo(' + width 
                     + ',' + height + ');')
 w.document.writeln('</sc'+'ript>')
 w.document.close()

 w.document.location.href = url;
}