Rails spinoffs - Jan 2008 - Selector.matchElements

var matches = new Selector(expression).findElements();

if the expression is ''td'', the matches is all the elements in
the
document, and my system nearly dead. Why not use ancestors of the
element in findElements()?
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Such as:
matchElements: function(elements, expression) {
  	var matches = null;
  	var i = 0;
  	if(elements != null) {
	  	while((matches == null || matches.length == 0) && i <
elements.size()) {
	  		matches = new Selector(expression).findElements(elements[i]);
	  		i++;
	  	}
  	}
  	if(matches == null) {
  		matches = new Selector(expression).findElements();
  	}
    h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._counted) results.push(element);
    h.unmark(matches);
    return results;
  }
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