Microsoft Excel spread Sheet displaying some junk in place of Data!

I have been maintaining Excel sheet with some critical data over 4 years. Its a consolidated back up file for all the data I have been using all these days. Yesterday when I opened it i saw some junk in place of my data,

It started with INDX( and followed with some bizarre symbols and letters.

in between i found this code

removeAlertMsg(tTable);
}
}
}
alerted = false;
}

if (alertID != null) {
window.clearTimeout(alertID);
}

if (updateAlertID != null) {
window.clearInterval(updateAlertID);
}
}
}

function resetSessionTimeout() {
if (window.opener && window.opener.resetSessionTimeout) {
window.opener.resetSessionTimeout();
}
else {
clearSessionTimeout();
setSessionTimeout();
}
}
-->
</script>

<script language="JavaScript">
//
// applist.js

//


function appEmbed(mylink, width, height)
{
var scrollable = "no";
if (width > window.screen.availWidth) {
scrollable = "yes";
width = window.screen.availWidth - 10;
}
if (height > window.screen.availHeight) {
scrollable = "yes";
height = window.screen.availHeight - 30;
}
var win = window.open(mylink, '_blank', 'width=' + width + ',height=' + height + ',scrollbars=' + scrollable + ',status=no,resizable=no,toolbar=no');
if (win != null) {
try {
win.moveTo(window.screen.availLeft, window.screen.availTop);
} catch (e) {
//Ignore exception caused by this page being in a different zone to the opened window. (RDP Trusted Sites issue).
}
}
return win;
}


function popup(mylink, windowname)
{
return popup(mylink, windowname, false);
}

function popup(mylink, windowname, fullwindow)
{

var winRef, href;
if (typeof(mylink) == 'string') {
href=mylink;
}
else {
href=mylink.href;
}
if (fullwindow) {
winRef = window.open(href, windowname, 'width=680,height=540,scrollbars=yes,resizable=yes,menubar=yes,toolbar=yes,status=yes,location=yes');
}
else {
winRef = window.open(href, windowname, 'width=800,height=600,scrollbars=yes,resizable=yes');
// store the window handle in the parent frame.
if (!parent.windowHandles) {
parent.windowHandles = new Object();
}
parent.windowHandles[windowname] = winRef;
}
return false;
}

function closePopupWindows()
{
if (parent.windowHandles != null) {
var windows = parent.windowHandles;
for (var i in windows) {
var winRef;
// Get the pop-up window handle from the parent
winRef = windows;
if (winRef && winRef.open && !winRef.closed) {
winRef.close();
}
}
parent.windowHandles = null;
}

return true;
}

function onLoadLayout()
{
// This client-side redirection breaks on PDA and this client download
// script applies to Win32 platform only.

if (top.hiddenwindow) {
top.hiddenwindow.location = "Win32WebClientDownload.aspx";
}

resetSessionTimeout();
return;
}

</script>

and a lot of CSS too


Please help to get my data back!

Thanks in Advance!

 

Throw it away and load your most recent backup. You will lose only the data entered since the last backup.

What you have now may have lost all of your data. Or you may spend days, weeks, or months recovering your data.