Create a quick reference to a $ context, useful for concise and readable $('thing').find() shortcuts

jquery.scope.js

/*
	Return $ function limited to current context.
	
	e.g 
	if:
	var $widget = $('widget').scope()
	
	then:
	$widget() == $('widget')
	$widget('a') == $('widget').find('a')
*/
	
$.fn.scope = function(){
	var $el = this;
	
	return function(x){
		return x ? $el.find(x) : $el;
	}
}