   var idx = this.getParentIndex();   if (idx<=0) return null;  return this.parent.children[idx-1]; }, 
   var idx = this.getParentIndex();   if (idx<=0) return null;  return this.parent.children[idx-1]; }, 
	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/2007/6315/2f1d2cb699c9d9329e8b782b0463156e211cb0f6/struts_dojo.js.uncompressed.js/buggy/src/main/resources/org/apache/struts2/static/dojo/struts_dojo.js.uncompressed.js