Find and select the tab of a TabContainer parent of currentWidget

gistfile1.js

// this, is the tabContainer

		findAndSelectTab : function(currentWidget){
			var tabContainerId = this.get('id');
			var parent = null;
			var tab = null;
			if(undefined != currentWidget.getParent
				&& undefined != typeof(currentWidget.getParent())){
				parent = currentWidget.getParent();
			}else{
				parent = dijit.getEnclosingWidget(currentWidget.domNode);
			}
			if(tabContainerId == parent.getParent().get('id')){ tab = parent; }
			while(undefined != parent
					&& tabContainerId != parent.get('id')){
				if(undefined != currentWidget.getParent
					&& undefined != typeof(parent.getParent())){
					parent = parent.getParent();
				}else{
					parent = dijit.getEnclosingWidget(parent.domNode);
				}
				if(tabContainerId == parent.getParent().get('id')){
					tab = parent;
				}
			}
			this.selectChild(tab);
		},

		getWidgetParent : function(someWidget){
		    var myParent = null;
		    if(undefined != someWidget.getParent
		       && undefined != typeof(someWidget.getParent())){
		      myParent = someWidget.getParent();
		    }else{
		      myParent = dijit.getEnclosingWidget(someWidget.domNode);
		    }
		    return myParent;
		}