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_=Selector.xpath.pseudos;return _["first-of-type"]($)+_["last-of-type"]($)},nth:function(A,$){var B,C=$[6],E;if(C=="even")C="2n+0";if(C=="odd")C="2n+1";if(B=C.match(/^(\d+)$/))return"["+A+"= "+B[1]+"]";if(B=C.match(/^(-?\d*)?n(([+-])(\d+))?/)){if(B[1]=="-")B[1]=-1;var _=B[1]?Number(B[1]):1,D=B[2]?Number(B[2]):0;E="[((#{fragment} - #{b}) mod #{a} = 0) and "+"((#{fragment} - #{b}) div #{a} >= 0)]";return new Template(E).evaluate({fragment:A,a:_,b:D})}}}},criteria:{tagName:"n = h.tagName(n, r, \"#{1}\", c);   c = false;",className:"n = h.className(n, r, \"#{1}\", c); c = false;",id:"n = h.id(n, r, \"#{1}\", c);        c = false;",attrPresence:"n = h.attrPresence(n, r, \"#{1}\"); c = false;",attr:function($){$[3]=($[5]||$[6]);return new Template("n = h.attr(n, r, \"#{1}\", \"#{3}\", \"#{2}\"); c = false;").evaluate($)},pseudo:function($){if($[6])$[6]=$[6].replace(/"/g,"\\\"");return new Template("n = h.pseudo(n, \"#{1}\", \"#{6}\", r, c); c = false;").evaluate($)},descendant:"c = 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