[Proto-Scripty] Is there a way to DRY this up?

[Walter Lee Davis]

I have a quick filter for hiding list items until only matches show. I  
want to cover all the various ways that a user might interact with the  
search field, so I write this lovely:

        $('filter').observe('keyup', function(evt){
                this.fire('check:filter');
        });
        $('filter').observe('click', function(evt){
                this.fire('check:filter');
        });
        $('filter').observe('focus', function(evt){
                this.fire('check:filter');
        });
        $('filter').observe('blur', function(evt){
                this.fire('check:filter');
        });
Is there any way to write this more clearly, as in with fewer lines of  
code?

I'm using 1.6.latest, haven't tried the new 1.7 goodies yet. Would  
that help?

Walter

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