Workaround for a cross-site XMLHTTP request

xml| Resolution | request | site users after the latest patch of IE, ie default configuration, the use of XMLHttp will not be able to access across the site, such as the http://community.csdn.net/page can not access http:// message.csdn.net/the page. The following error will be reported:

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Error
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A run time error occurred.
Do you want to debug?

Line: 49
Error: Access denied.
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Yes (Y) No (N)
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One way to fix this:
Principle, use the following way to invoke a script that is available across a Web site:
<script id=message language=javascript src= "******************" ></script>

As a then, we can implement a cross-site scripting call in the following code format. In turn, the implementation of XMLHttp can not be called across the site.

var Url = "http://message.csdn.net/********":
var scriptname = "Checkuserhasnewmessage";

var head= document.getelementsbytagname ("Head"). Item (0);
var old = document.getElementById (scriptname);
if (old) head.removechild (old);

var script = document.createelement ("script");
SCRIPT.SRC = URL;
Script.defer = true;
Script.type = "Text/javascript";
Script.id = ScriptName;
Head.appendchild (script);

This script requires the callee to return the JS script. You can write some functions in advance of the caller and then call back the calls of those functions.
The above methods in the previous version of IE, FireFox default settings are no problem.