HTML source not wrapped in IE when using skin 'office2003'

It seems that the property value "white-space: pre;" is causing the source code not to be wrapped.
This rule can be found in file : ckeditor/skins/office2003/editor.js

.cke_skin_office2003 textarea.cke_source
{
font-family:'Courier New',Monospace;
font-size:small;
white-space:pre;
background-color:#fff;
}

I have changed the value of property white-space to normal.
The html course code is now wrapped like FckEditor.