I have a Javascript function that basically updates a DOM Element´s content with data from the server. It works fine with Firefox but fails when used with Firefox or Safari. I think the reason for this is that Firefox sets more Parameters in the Request-Header (Accept, Accept-Charset for example) that makes the ASP.NET controls happy. So now I would like to add these parameters to the header myself. Unfortunatly Safari 3 and IE7 ignore these values. Am I missing something? 

...

var wRequest =  new Sys.Net.WebRequest();   
    wRequest.set_httpVerb("GET"); 
    wRequest.set_url(url);
   
    wRequest.add_completed(
        function request_completed(result)
        {
            element.innnerHTML = result.get_responseData();
        }
    );  
   
    wRequest.get_headers()['Accept'] = 'text/xml; application/xml; application/xhtml+xml; text/html; text/plain;';
    wRequest.get_headers()['Accept-Charset'] = 'ISO-8859-1; utf-8;';
    wRequest.invoke();

... 

Thanks,

Elmar 

What kind of data are you trying to retrieve? Is it just plain text? Maybe you can just try to package it as JSON, so it is also returned as a string. All the plumbings are done behind the scenes.

I actually got this part working. There is still something missing to make it work with IE and Safari but at least the Headers are added like one would expect.

@ericpanorel: Actually I am converting this app back from ExtJS. ExtJS has a niffty little feature which simply let´s you update a DOM-Element with any content from another page. Something like Ext.get('someDomElem'').update('someURL');

I tried to mimic this behavior but it is not as easy as it seemed in the first place. Because ASP.NET Ajax is still somehow limited in this area I might actually go with a simple Webrequest/JSON Response and deal with rendering content in the Script itself.

 Thanks,

Elmar