several FCKEditor objects in the same page

Hello,
To create a FCKEditor object, I use your javascript code
<script type="text/javascript">
window.onload = function()
{
var oFCKeditor = new FCKeditor( 'MyTextarea',
"95%", "200", "Serious" ) ;
oFCKeditor.ReplaceTextarea() ;
}
</script>

But I want to create several FCKEditor objects in the same page. Howshoud I do ?
Thanks.