can't specify new window attributes in IE

[Fred]

I can't get IE to link to a new widown with attributes w/h as i can in other
browsers. It works in NN, Op, Moz.
The code is all on the same line as per msdn
Here's the code:
...
<a href="#" target="_self" onClick="window.open('images/prod/Ggps2.jpg','GPS
II','toolbar=no,width=200,height=200,left=50,top=50,status=no,scrollbars=no,
resize=no');return false"><img border="0" src="images/thumb/Ggps2.gif"
alt="GPS II" width="73" height="70"></a>.
...
any help would be appreciated
Fred