MSIE DOM messing around with the name attribute

I am working on a small editor for a CMS, and wanted to take a less WYSIWYG approach than for example HTMLarea does. My idea is to clone a node of possible block elements. Now, in the editor example Firefox works perfectly, the test output gets new IDs, for attributes and name attributes. MSIE however, fails to rename the name attribute (in the output the name of the textarea stays “c” instead of “c0”, the select doesn’t get a name attribute at all). The MSDN library does not have any information if there is a known bug.

The code in question:

ps[i].getElementsByTagName('label')[0].htmlFor='c'+i;
ps[i].getElementsByTagName('textarea')[0].id='c'+i;
ps[i].getElementsByTagName('textarea')[0].name='c'+i;
ps[i].getElementsByTagName('label')[1].htmlFor='t'+i;
ps[i].getElementsByTagName('select')[0].id='t'+i;
ps[i].getElementsByTagName('select')[0].name='t'+i;

Volkan Ozcelik pointed out on the evolt list that mixed case works:

ps[i].getElementsByTagName('label')[0].htmlFor='c'+i;
ps[i].getElementsByTagName('textarea')[0].id='c'+i;
ps[i].getElementsByTagName('textarea')[0].NAME='c'+i;
ps[i].getElementsByTagName('label')[1].htmlFor='t'+i;
ps[i].getElementsByTagName('select')[0].id='t'+i;
ps[i].getElementsByTagName('select')[0].NaMe='t'+i;

Anyone out there who can explain?