rem: function nextPileLeft(stack) { if(!stack) return null; for(var n = stack.previousSibling; n; n = n.previousSibling) 
add: function nextPileLeft(pile) { if(!pile) return null; for(var n = pile.previousSibling; n; n = n.previousSibling) 
context: function nextPileLeft(stack) {  if(!stack) return null;  for(var n = stack.previousSibling; n; n = n.previousSibling)    if(("isPile" in n) && n.isPile) return n;  return null;}
meta: 3385	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3385/15f3df693ddf02fb9ee6a2662189220868368b23/util.js/clean/util.js