[jQuery] My first plugin, criticisms please

[Adrian Lynch]

I hope this is ok to do. I've just done my first plugin and I thought
I'd ask for anyone's opinions.

It takes the value of one input box and assigns it to any number of
other input boxes after being run though a formatter function.

In this example the formatter strips anything that isn't an alpha-
numeric character or a full stop (period for the yanks!).

One thing I'm not sure about is the way I apply the plugin. I'm doing
it:

ELEMENT_I_WISH_TO_COPY.syncValue(ELEMENTS_TO_CHANGE)

whereas it feels like it should be the other way around. Thoughts
anyone?

Here it is with test code:

<script type="text/javascript" src="PATH_TO_YOUR_JQUERY"></script>
<script type="text/javascript">

        jQuery.fn.syncValue = function(syncElements, formatter) {

                var syncFormatter = formatter;

                if (syncFormatter == undefined) {
                        syncFormatter = function(inputString) {
                                return inputString;
                        };
                }

                return this.each(function(){

                        var element = this;

                        syncElements.each(function(i) {
                                $(this).attr("value", 
syncFormatter($(element).attr("value")));
                        });

                });

        };

        $(function(){
                $(".oringinal").syncValue($(".syncValue"), formatter);
        });

        function formatter(inputString) {
                return inputString.toLowerCase().replace(/[^a-z0-9\.]/gi, "-");
        }

</script>

<input type="text" class="oringinal" value="Value 1" />
<input type="text" class="syncValue" value="" />
<input type="text" class="syncValue" value="" />

Thanks all.

Adrian