Question

Resize Iframe height, receive Access Denied error.

Asked by: kruegerste

We have several pages on our site where we integrate a couple 3rd party vendor sites using iframes.  I understand that javascript can not access the attributes of the iframe if the iframe source is not the same domain as the parent site (for security purposes).  So we create our own sub-domain and point it to the IP of their domain that they have created for us.  

For example (not real):  our domain is www.cruisetesting.com and the page we are accessing is vacations.cruisebookings.com.  So we create our own sub-domain called vacations.cruisetesting.com and point it to the IP address of vacations.cruisebookings.com

This works great and it appears to have our domain as they browse through a 3rd party site.  The problem is the Access Denied error we get when trying to resize the iframe.  This has worked in the past but we are doing a new site and it isn't working.

Here is the Javascript function that is used.  

function calcHeight(i_frame) {
      //find the height of the internal page
      iframeHeight = document.getElementById(i_frame.id).contentWindow.document.body.scrollHeight;

       //change the height of the iframe
      document.getElementById(i_frame.id).height = iframeHeight;
}


Any ideas would be very appreciated.  Thanks.

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Asked On
2007-12-26 at 12:05:08ID23043630
Tags

Javascript

Topics

JavaScript

,

Hypertext Markup Language (HTML)

,

WebApplications

Participating Experts
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Points
500
Comments
7

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Answers

 

by: mrichmonPosted on 2007-12-26 at 13:06:07ID: 20530918

That is still a different domain.  From iframe point of view you cannot change if it is a different domain.

Can you have them add code to the iframe page?

This code would do it:
<script type="text/javascript">
      function AdjustParentContainerHeight()
      {
            if(typeof(window.parent.AdjustHistoryHeight) != "undefined")
            {
                  window.parent.AdjustHistoryHeight(Math.max(document.body.scrollHeight, document.body.offsetHeight) + 30);
            }
      }

</script>

Then add to the body tag of iframe page an onLoad="AdjustParentContainerHeight()"

Then the parent page has this:
function AdjustiFraneHeight(height)
{
      document.getElementById(i_frame.id).style.height = height + "px";
}

 

by: BadotzPosted on 2007-12-26 at 13:10:54ID: 20530945

Perhaps set the SRC attribute of the iframe to '', resize it, and restore the SRC attribute?

 

by: kruegerstePosted on 2007-12-26 at 16:12:33ID: 20531650

Unfortunately the solution can not involve any changes needed by the 3rd party.  Not cost effective and they would need to include the change on every one of their pages.

I will try your suggestion tomorrow Badotz, allow I don't think it will work.

Anybody else have any suggestions?  Is there anyway for the 3rd party to allow us as a trusted user or something on their web server?  Maybe a compact privacy policy?  

 

by: BadotzPosted on 2007-12-26 at 16:13:45ID: 20531654

Yeah, if the dimensions depend on loaded content, then you are hosed :-/

 

by: mrichmonPosted on 2007-12-26 at 17:42:02ID: 20531950

It is not a privacy policy - it is browser enforced to prevent cross site scripting

 

by: Computer101Posted on 2008-03-01 at 09:22:56ID: 21022511

Forced accept.

Computer101
EE Admin

20120131-EE-VQP-002

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