HTML save problem

Hi,

I've got the problem when I put the code on the editor with my cms php website it saved incorrectly. As the code below ....

<iframe height="600" width="600" border="0" style="" src="http://www.google.com/calendar/htmlembed? showTitle=0&showNav=0&height=400&wkst=1&bgcolor=% 23FFFFFF&src=usp5buidotpv002ibbqp4btiek% 40group.calendar.google.com&color=%23A32929&ctz=Australia% 2FSydney" scrolling="no"> </iframe>

It changed to .....

<p><i><x>frame height=&quot;600&quot; frameborder=&quot;0&quot; width=&quot;600&quot; scrolling=&quot;no&quot; style=&quot;border-width: 0pt;&quot; src=&quot;http://www.google.com/calendar/embed?showTitle=0&amp;showNav=0&amp;showPrint=0&amp;showTabs=0&amp;showCalendars=0&amp;height=600&amp;wkst=1&amp;bgcolor=%23FFFFFF&amp;src=watthaimelbourne%40gmail.com&amp;color=%23A32929&amp;ctz=Australia%2FSydney&quot;&gt;</x></i></p>

it seemed like the save engine is error or else even i tried to put some other code like "<object></object>" it's still the same the result come out as "<p><o><x>bject&gt; </x></o></p>" ...... incorrectly in source page.

Please help!

Thanks ,