Form size

I use the following to open a form:

Code:

---

            RegisterStartupScript("ClientSideScript", "<script language=javascript>window.open('OpenFile.aspx', null, 'location=no;status=no;toolbar=no')</script>")

---

How can I set the height and width of the form to make it smaller?

Try this
window.open ("", "mywindow",
"location=1,status=1,scrollbars=1,width=500,height=500");