Center popup i tried but no work

ok this is what i got so far for my flash button code and for my frame. i wanna make a popup window that is 550 x 400…
code for button=
on (release) {
// customize the window that gets opened
// 0 equals NO.
// 1 equals YES.
address = “http://www.freewebs.com/headface/Episode1.html”;
target_winName = “HeadFace v5”;
width = 550;
height = 400;
toolbar = 0;
location = 0;
directories = 0;
status = 0;
menubar = 0;
scrollbars = 0;
resizable = 0;
// sends data back to the function
openWinCentre(address, target_winName, width, height, toolbar, location, directories, status, menubar, scrollbars, resizable);
}

thats for my button!
this is for my frame!:::

_global.openWinCentre = function(url, winName, w, h, toolbar, location, directories, status, menubar, scrollbars, resizable) {
getURL(“javascript:window.open(’”+url+"’,’"+winName+"’,’"+“width=”+w+",height="+h+",toolbar="+toolbar+",location="+location+",directories="+directories+",status="+status+",menubar="+menubar+",scrollbars="+scrollbars+",resizable="+resizable+",top=’+((screen.height/2)-("+h/2+"))+’,left=’+((screen.width/2)-("+w/2+"))+’"+"’);void(0);");
};

now when i press da button the site address come out to be…

javascript:window.open(‘http://www.freewebs.com/headface/Episode1.html’,‘HeadFace%20v5’,‘width=550,height=400,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,top=’+((screen.height/2)-(200))+’,left=’+((screen.width/2)-(275))+’’);void(0);

waz wrong~! plz help!