var loadGoogleMaps = (function($) {
	
    	var now = $.now(),
    	
    		promise;
    	
    	return function( version, apiKey, language ) {
    		
    		if( promise ) { return promise; }
    		
    			//Create a Deferred Object
    		var	deferred = $.Deferred(),
    		
    			//Declare a resolve function, pass google.maps for the done functions
    			resolve = function () {
    				deferred.resolve( window.google && google.maps ? google.maps : false );
    			},
    			
    			//global callback name
    			callbackName = 'loadGoogleMaps_' + ( now++ ),
    			
    			// Default Parameters
    			params = $.extend(
    			 {'sensor': false}
    			 , apiKey ? {'key': apiKey} : {}
    			 , language ? {'language': language} : {} 
    			);;
    		
    		//If google.maps exists, then Google Maps API was probably loaded with the <script> tag
    		if( window.google && google.maps ) {
    			
    			resolve();
    		
    		//If the google.load method exists, lets load the Google Maps API in Async.
    		} else if ( window.google && google.load ) {
    		
    			google.load('maps', version || 3, {'other_params': $.param(params) , 'callback' : resolve});
    
    		//Last, try pure jQuery Ajax technique to load the Google Maps API in Async.
    		} else {
    			
    			//Ajax URL params
    			params = $.extend( params, {
    				'v': version || 3,
    				'callback': callbackName
    			});
    			
    			//Declare the global callback
    			window[callbackName] = function( ) {
    				
    				resolve();
    				
    				//Delete callback
    				setTimeout(function() {
    					try{
    						delete window[callbackName];
    					} catch( e ) {}
    				}, 20);
    			};
    			
    			//Can't use the jXHR promise because 'script' doesn't support 'callback=?'
    			$.ajax({
    				dataType: 'script',
    				data: params,
    				url: 'https://maps.googleapis.com/maps/api/js'				
    			});
    			
    		}
    	
    		promise = deferred.promise(); 
    		
    		return promise;
    	};
    	
}(jQuery));

loadGoogleMaps( 3, '', 'pt' );