Error with window.open - JavaScript and IE

function printThis(patientId) {
    window.open("print开发者_如何学Python.aspx?ID=" + patientId, "Site", "menubar=0,resizable=1,width=800,height=900");
}

works fine with firefox and chrome but not with IE (9.0 at least) - "invalid argument", what's the issue and what's the solution?

Thanks in advance.

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Window.open must be called from an onClick event. Otherwise Mr popup blocker will eat your window.

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Works for me (well replacing your aspx with a valid url). Are you sure the pop-up blocker is not eating your window.open ?