docs: function(callback, error_callback, params) {
  					
  					var sources_url = JSDAS.URL.getSourcesURL(complete_url);
  					if (!sources_url) {
  						JSDAS.addError("wrong_url","Malformed or Undefined URL?");
  						return undefined;
  					}
  					
  					sources_url += JSDAS.URL.paramsURLEncode(params);
  					var cb = callback || _generic_callback;
  					var ecb = error_callback || function(){JSDAS.addError("error_retrieving_sources","Error retrieving sources, see errors log");}; 
  					JSDAS.sources(sources_url, callback, error_callback);					
  				}