How to write in Iframe in selenium

Selenium is unable to type in iframe. But we can write in it by identifying the iframe using css.
When you write any mail in gmail you can see the body is a iframe we can write in it using below commands
Selenium IDE

<tr>
 <td>storeEval</td>
 <td>var bodytext=" Writing text in iframe body with the help of http://automationtricks.blogspot.com ";  var iframe_locator="css=table:contains('Subject:') +*  iframe";   var iframe_body=selenium.browserbot.findElement(iframe_locator).contentWindow.document.body;   if (browserVersion.isChrome){    iframe_body.textContent=bodytext; }  else if(browserVersion.isIE){ iframe_body.innerText=bodytext; }</td>
 <td></td>
</tr>

Selenium RC.

String  = selenium.getEval("var bodytext=\" Writing text in iframe body with the help of http://automationtricks.blogspot.com \";  var iframe_locator=\"css=table:contains('Subject:') +*  iframe\";   var iframe_body=selenium.browserbot.findElement(iframe_locator).contentWindow.document.body;   if (browserVersion.isChrome){    iframe_body.textContent=bodytext; }  else if(browserVersion.isIE){ iframe_body.innerText=bodytext; }");