Broken javascript

gistfile1

function getSuggestions(text, callback){
	var rdioBaseURL =  "http://api.rdio.com/1/";
	var content_type = "application/x-www-form-urlencoded";
	var types = "Artist";
	var params = new HashTable();
	var params['body'] = {"method":"searchSuggestions", "query":text, "types":types};
	var params['method'] = 'POST';
	var params['headers'] = {"Content-Type":content_type};
	oauth.sendSignedRequest(rdioBaseURL,callback,params);
};