php and javascript open in same window

Hi
i have this code and all is working fine except i want it to open in the same window, not a new window,

$halves[1] .= "link=\"javascript:NewWindow=window.open('http://www.michaelshuttleworth.com/Payment_page.php?name=" . $fileid . ".jpg&album=" . $album . "','myWindow','width=300,height=730,toolbar=no,location=no,status=yes,menubar=no,scrollbars=yes,resiz able=yes');NewWindow.focus(); void(0);\"";

Can anyone help please, i know it is simple but i am going round i circles
Many thanks
Mike

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