Minimum input value

[Walle]

<script type="text/javascript">

$.fn.updater = function ()
{
	$("div#db_res").load('result.php', { qs: $(this).val() });
	return this;
};

$(document).ready(function(){

	$("input[name='qs']").updater().focus().keyup(function(){
		var str = $(this).val(); 
		$("div#result").html( "Input: " + str ); 
		$(this).updater(str);
	});

});
</script>
	
	<form action="index.php" method="get">
	<input type="text" name="qs" value="">
	</form>

I have a form like above that load a page soon something is typed into a text field, but I want minimum value, eg minimum 3 character is typed before it loads. Can this be dune somehow?

[Walle]

Anyone know how to use this jquerys minlength function with above code?
http://docs.jquery.com/Plugins/Valid...nlength#length

$("#myform").validate({
  rules: {
    field: {
      required: true,
      minlength: 3
    }
  }
});

This 2 functions in first post is also jquery function but can’t find out how to use this with it. Anyone know how to use?