[jQuery] Error .ajax and etc in jQuery

[jkeks]

I tryed to do .ajax call:
        {alert(reg_email);
        $.ajax
            ({url:"register.php",
            type:"GET",
            data:
{reg_email:reg_email ,reg_pass1:reg_pass1,reg_fio:reg_fio,reg_tel:reg_tel},
            success:function(data){$("#reg_agree").val("Готово");$
("#reg_agree").remove();alert(data);}
            })
        }

Problem in:
FireFox last work ok
Opera last  work ok
IE 6: BAD
in IE call done, and PHP script executing, but answer not complete..
and function(data){$("#reg_agree").val("Готово");$
("#reg_agree").remove();alert(data);}
NOT executing, but in FF & Opera all ok.

same with ".post"

sometime IE wrote: "g" - is null or not object with toggle function
maybe thats glich?