WordPress iframe into Adobe Muse "Uncaught SecurityError"

Hi,

I created my website alriwaya.net with Adobe Muse application and I integrated WordPress blogs inside the pages.

the iframe code is: <iframe name="Stack" style='width: 100%;' src='http://alriwaya.net/blogs/?cat=2' frameBorder="0" overflow:hidden; scrolling="no" seamless="seamless" id="iframe" onload="javascript:resizeIframe(this);"></iframe>

and I use this script in my page head to let the blog expand in height as articles increased

<script language="javascript" type="text/javascript">
  function resizeIframe(obj) {
    obj.style.height = obj.contentWindow.document.body.scrollHeight + 'px';
  }
</script>

The problem is when I browse the page http://www.alriwaya.net/%D8%A3%D8%AE%D8%A8%D8%A7%D8%B1.html iframe is not showing and I got error “Uncaught SecurityError: Blocked a frame with origin “http://www.alriwaya.net” from accessing a frame with origin “http://alriwaya.net”. Protocols, domains, and ports must match.”

but without www it will show. like that: http://alriwaya.net/%D8%A3%D8%AE%D8%A8%D8%A7%D8%B1.html

I hope this can be solve.

Thank you