getPreviousSibling: function(){    var idx = this.getParentIndex();   if (idx<=0) return null;  return this.parent.children[idx-1]; }, 
},getPreviousSibling:function(){ var idx=this.getParentIndex(); if(idx<=0){ return null; } return this.parent.children[idx-1]; },getSiblings:function(){ 
  getPreviousSibling: function(){    // summary:    //    returns null if this is the first child of the parent,    //    otherwise returns the next sibling to the "left".    var idx = this.getParentIndex();      // first node is idx=0 not found is idx<0    if (idx<=0) return null;     return this.parent.children[idx-1]; // Widget  },
6315	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6315/90939f35f46f873d9b1f5c5f818ecf012711dc71/dojo.js/buggy/src/main/resources/org/apache/struts2/static/dojo/dojo.js