var cb = typeof a.checked == 'boolean';
var href = a.href ? a.href : Roo.isGecko ? "" : "#";
var buf = ['<li class="x-tree-node"><div class="x-tree-node-el ', a.cls,'">',
var cb = typeof a.checked == 'boolean';
var href = a.href ? a.href : Roo.isGecko ? "" : "#";
var buf = ['<li class="x-tree-node"><div class="x-tree-node-el ', a.cls,'">',