Sharepoint 2010 Enable Rich Text in IE9 and IE10

1) Open the site with SharePoint Designer

2) Go to All Files/_catalogs/masterpage/
3) Right click on yourtheme.master and choose Check Out
4) Right click again on yourtheme.master and choose Edit File in Advance Mode
5) Before the </head> tag place the following code:

<script type="text/javascript">

  ExecuteOrDelayUntilScriptLoaded(function () {

    document.write('<script type="text/javascript" src="/Style Library/UOD/JS/form.ie9fix.js"></' + 'script>');

  }, 'form.js');

</script> 

6) Download the attached file form.ie9fix.js and move it to /_catalogs/masterpage/
7) Save the changes of your master page file
8) Right click on yourtheme.master and choose Check In
9) A dialog box will be prompeted choose Publish Major Version
10) Approve your master page