Tring to javascript code..omg help!

I keep tring to change the code on for this on microsoft script editor, but it wont save it...it will just go back to the way it was after it saves...i dont understand..can sumone please help...i highlighted what i am tring to change. Im tring to change it so that it says "center"

<script language="JavaScript"><!--

function msoCommentShow(com_id,anchor_id) {
if(msoBrowserCheck()) {
c = document.all(com_id);
a = document.all(anchor_id);
if (null != c) {
var cw = c.offsetWidth;
var ch = c.offsetHeight;
var aw = a.offsetWidth;
var ah = a.offsetHeight;
var x = a.offsetLeft;
var y = a.offsetTop;
var el = a;
while (el.tagName != "BODY") {
el = el.offsetParent;
x = x + el.offsetLeft;
y = y + el.offsetTop;
}
var bw = document.body.clientWidth;
var bh = document.body.clientHeight;
var bsl = document.body.scrollLeft;
var bst = document.body.scrollTop;
if (x + cw + ah/2 > bw + bsl && x + aw - ah/2 - cw >= bsl ) {
c.style.left = x + aw - ah / 2 - cw;
}
else {
c.style.left = x + ah/2;
}
if (y + ch + ah/2 > bh + bst && y + ah/2 - ch >= bst ) {
c.style.top = y + ah/2 - ch;
}
else {
c.style.top = y + ah/2;
}
c.style.visibility = "visible";
}
}
}

function msoCommentHide(com_id) {
if(msoBrowserCheck()) {
c = document.all(com_id)
if (null != c) {
c.style.visibility = "hidden";
c.style.left = "-10000";
c.style.top = "-10000";
}
}
}

function msoBrowserCheck() {
ms=navigator.appVersion.indexOf("MSIE");
vers = navigator.appVersion.substring(ms+5, ms+6);
ie4 = (ms>0) && (parseInt(vers) >=4);
return ie4
}

if (msoBrowserCheck()) {
document.styleSheets.dynCom.addRule(".msocomspan1","position:relative");
document.styleSheets.dynCom.addRule(".msocomspan2","position:absolute");
document.styleSheets.dynCom.addRule(".msocomspan2","left:-1.5ex");
document.styleSheets.dynCom.addRule(".msocomspan2","width:2ex");
document.styleSheets.dynCom.addRule(".msocomspan2","height:0.5em");
document.styleSheets.dynCom.addRule(".msocomanch","font-size:0.5em");
document.styleSheets.dynCom.addRule(".msocomanch","color:red");
document.styleSheets.dynCom.addRule(".msocomhide","display: none");
document.styleSheets.dynCom.addRule(".msocomtxt","visibility: hidden");
document.styleSheets.dynCom.addRule(".msocomtxt","position: absolute");
document.styleSheets.dynCom.addRule(".msocomtxt","top:-10000");
document.styleSheets.dynCom.addRule(".msocomtxt","left:-10000");
document.styleSheets.dynCom.addRule(".msocomtxt","width: 33%");
document.styleSheets.dynCom.addRule(".msocomtxt","background: infobackground");
document.styleSheets.dynCom.addRule(".msocomtxt","color: infotext");
document.styleSheets.dynCom.addRule(".msocomtxt","border-top: 1pt solid threedlightshadow");
document.styleSheets.dynCom.addRule(".msocomtxt","border-right: 2pt solid threedshadow");
document.styleSheets.dynCom.addRule(".msocomtxt","border-bottom: 2pt solid threedshadow");
document.styleSheets.dynCom.addRule(".msocomtxt","border-left: 1pt solid threedlightshadow");
document.styleSheets.dynCom.addRule(".msocomtxt","padding: 3pt 3pt 3pt 3pt");
document.styleSheets.dynCom.addRule(".msocomtxt","z-index: 100");
}

// -->
</script>

Anyone? Please