cannot prepopulate FCKEditor value

I am having trouble prepopulating the FCKEditor with a variable using PHP. Here is my code:

<script type="text/javascript">
var oFCKeditor = new FCKeditor( 'FCKeditor1' ) ;

   oFCKeditor.Value = "<?php echo $SomeVariable; ?>" ;

oFCKeditor.Create() ;
</script>

This works fine unless the variable contains newline tags, in which case the FCKEditor window doesn't even display on the page.

I really need this to work. Can anyone let me know what I'm doing wrong or help me get this to work?

Thanks!!

Ryan