[jQuery] How come when I put everything in like this, it will not be working?

[DeaR]

<script type="text/javascript">
function disappear() {
        $("#response").fadeOut("slow")
}
$(document).ready(function() {
        $("#message_me").click(function() {
                $("#form").fadeIn("slow")
        })
        $("#send").click(function() {
                var str = $("#input_form").serialize()
                $.post("send-mail.php",str,function(data) {
                        $("#response").html(data).fadeTo("slow", 0.7)
                        setTimeout("disappear()", 3000)
                })
        })
        $.get("counter.php", function(data) {
                $("#counter").html(data).fadeIn("slow")
        })
})
</script>
I saved the above script in a separate file, let's say "myscript.js".
Then I imported it in my html file like this
<script src="myscript.js" type="text/javascript"></script>

Then, when I run this, it's not working. I've been trying to find the
error. It says "missing } in XML expression at $("#send").... but then
I switched places between $("#send")... and $.get(..., then the error
comes out like "missing } XML expression at $.get(... instead. So I
don't know what's wrong, Is there any function that needs to be put in
between somehow?

Again, now I delete everything except for $.get(.... in myscript.js.
And I put them in the html file manually like
<script type="text/javascript">
function disappear() {
        $("#response").fadeOut("slow")
}
$(document).ready(function() {
        $("#message_me").click(function() {
                $("#form").fadeIn("slow")
        })
        $("#send").click(function() {
                var str = $("#input_form").serialize()
                $.post("send-mail.php",str,function(data) {
                        $("#response").html(data).fadeTo("slow", 0.7)
                        setTimeout("disappear()", 3000)
                })
        })
})
</script>
Now then, it works fine.....

Can you tell me why it's not working in the uppermost one. cuz I want
to put everything in one script file, and not to show any script in
the html file.

Thank you very much for any responses, really appreciate your time.
DeaR