context: 	removeAttr: function(/*DomNode*/ node, /*String*/ ns, /*String|Boolena*/ attr){		// Summary:  Use the appropriate API to remove the role or state value		// Description: In IE use the generic removeAttribute() api.  An alias value 		// 	was added to the attribute name to simulate a namespace when the attribute		//  was set.  Otherwise use the removeAttributeNS() api to remove the state value		var success = true; //only IE returns a value		if(dojo.render.html.ie){			 success = node.removeAttribute(this[ns].alias+":"+attr);		}else{			node.removeAttributeNS(this[ns]["namespace"], attr);		}		return success;	}
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