Actionscript:
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function numParents(e:XML):int {
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var num:int = 0;
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while (e.parent()!= null) {
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num++;
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e = e.parent();
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}
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return num;
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}
Sometimes when reading through XML it's helpful to know how many parents a given node has. This function will do that. I recently used this function in an accordion widget.