This is my code, which sometimes works and sometimes doesn't. 

```
var resolve_ajax_login=function(){
  $.ajaxSetup({cache:false });
  var loginvar=$("#inputlogin").attr("value");
  var senhavar=$("#inputsenha").attr("value");
  $.post("../model/php/login_ajax.php",
        {login:loginvar, senha:senhavar},
        function(responseText){
            if (responseText=="ok"){ 
                window.location="areatrab.php";

            }else{
                $("#inputlogin").attr("value","");
                $("#inputsenha").attr("value","");
                $("#divmensagem").html("<span style='color:red;font-size:70%;'>"+responseText+"</span>");

            }
        }
  );
  return false;
};

```

Ok. It's in portuguese but I think you get the general picture. Sometimes this works, no problem, but some other times (only in IE, no problem whatsoever in Firefox) it throws a javascript error in my jquery.js file (minified). The error description is as follows:

Object doesn't support this property or method: jquerymin.js line 123 character 183..

which amounts to...

```
{return new A.XMLHttpRequest}

```

somewhere in the middle of the jquery.js file. It seems to be very IE-specific, as I had no such problems on Firefox. [This guy](http://www.tek-tips.com/viewthread.cfm?qid=1602872&page=9) apparently had the same problem as I did, but got no responses yet.

Has anyone else seen this? Thanks in Advance 

P.S.: I run IE 8