I am retrieving a json associative array using a dojo xhrGet request. The data comes back just fine, however I need the app to be able to display the keys and their properties (or values) without knowing the keys beforehand. So, I do the following:

function getData() {
        dojo.xhrGet( {		
	    url: "ytd_process.php",
	    handleAs: "json",
	    load: function(response) {
		 	    for (var key in response) {
				    dojo.byId("boxes").innerHTML+="<div id=\"box\">"+key+":"+response.key+"</div>";
			    }
			    console.dir(response);  // Dump it to the console
	    }	
     });
};

The keys are retrieved and displayed on the page, but the response.key returns undefined. I know the syntax is correct because if I replace .key with an actual key value it will display correctly. It appears it doesn't like a string as the key. Any help or advice would be greatly appreciated. Thank you.