I am using the code below which is fine but when I use the code below that in an attempt to send an html fragment to a processing page to save it as a file but I get nothing.

I have tried using ajax with processData set to false ads dataTypes of html, text and xml but nothing works. I can't find anything on this so I guess I must be missing something fairly trivial but I've been at it for 3 hours now.

This works
$.post("SaveFile.aspx", {f: "test4.htm", c: "This is a test"},
   function(data){
        alert(data);
   }, "text");  

This fails
$.post("SaveFile.aspx", {f: "test4.htm", c: "<h1>This is a test</h1>"},
   function(data){
        alert(data);
   }, "text");