1 // TODO insert(node, function)?

     2 // TODO insert(function, string)?

     3 // TODO insert(function, function)?

     4 d3_selectionPrototype.insert = function(name, before) {

     5   name = d3.ns.qualify(name);

     6 

     7   function insert() {

     8     return this.insertBefore(

     9         document.createElement(name),

    10         d3_select(before, this));

    11   }

    12 

    13   function insertNS() {

    14     return this.insertBefore(

    15         document.createElementNS(name.space, name.local),

    16         d3_select(before, this));

    17   }

    18 

    19   return this.select(name.local ? insertNS : insert);

    20 };