(function() {
        if ( 'undefined' != typeof google && google.gears ) return; 
 
        var gf = false; 
        if ( 'undefined' != typeof GearsFactory ) { // Firefox 
                gf = new GearsFactory(); 
        } else { // IE 
                try { 
                        gf = new ActiveXObject('Gears.Factory'); 
                } catch (e) {} 
        } 
 
        if ( ! gf ) return; 
        if ( 'undefined' == typeof google ) google = {}; 
        if ( ! google.gears ) google.gears = { factory : gf }; 
})();
GearsL10n = {
	updateCompleted: "已完成!",
	error: "出错啦:"
}
gnGears = { 
	init : function() { 
		if ( 'undefined' != typeof google && google.gears ) { 
			try {  
				localServer = google.gears.factory.create("beta.localserver"); 
				this.createStore();
			} catch(e) { // silence if canceled 
				this.message(); 
			} 
		} 
	}, 
 
	createStore : function() { 
		if ( 'undefined' == typeof google || ! google.gears ) return; 
 
		store = localServer.createManagedStore(this.storeName()); 
		store.manifestUrl = "http://www.greengnn.org/lab/gears/style/js/gears-manifest.js"; 
		store.checkForUpdate(); 
		this.message(); 
	}, 
 
	removeStore : function() { 
		if ( 'undefined' == typeof google || ! google.gears ) return; 
		localServer = google.gears.factory.create("beta.localserver"); 
		localServer.removeManagedStore(this.storeName()); 
		this.message(); 
	}, 
 
	storeName : function() { 
			var name = window.location.protocol + window.location.host;
			name = name.replace(/[\/\\:*"?<>|;,]+/g, '_'); // gears beta doesn't allow certain chars in the store name 
			name = 'wp_' + name.substring(0, 60); // max length of name is 64 chars 
			return name; 
    }, 
	message : function() { 
		var t = this,msg1 = t.I('gears-msg1'),msg2 = t.I('gears-msg2'), num = t.I('gears-upd-number'), wait = t.I('gears-wait'); 
 
		if ( ! msg1 ) return; 
 
		if ( 'undefined' != typeof store ) {
			msg2.style.display = 'block'; 
			store.oncomplete = function(){wait.innerHTML = (' ' + GearsL10n.updateCompleted); setTimeout("document.getElementById('gears-msg2').style.display = 'none'",1000)}; 
			store.onerror = function(){wait.innerHTML = (' ' + GearsL10n.error + ' ' + store.lastErrorMessage);}; 
			store.onprogress = function(e){if(num) num.innerHTML = (' ' + e.filesComplete + ' / ' + e.filesTotal);}; 
        } else if ( 'undefined' != typeof google && google.gears ) {
			msg1.style.display = 'block';
			msg2.style.display = 'none'; 
		} 
	},
         
	I : function(id) { 
		return document.getElementById(id); 
	}
}
window.onload = function(){
	gnGears.init();
}