diff --git a/drivers/unix/file_access_unix.cpp b/drivers/unix/file_access_unix.cpp
index 76042089fff..8e70ecc9320 100644
--- a/drivers/unix/file_access_unix.cpp
+++ b/drivers/unix/file_access_unix.cpp
@@ -63,7 +63,7 @@ Error FileAccessUnix::_open(const String& p_path, int p_mode_flags) {
 		fclose(f);
 	f=NULL;
 
-	String path=fix_path(p_path);
+	path=fix_path(p_path);
 	//printf("opening %ls, %i\n", path.c_str(), Memory::get_static_mem_usage());
 
 	ERR_FAIL_COND_V(f,ERR_ALREADY_IN_USE);
@@ -114,6 +114,9 @@ void FileAccessUnix::close() {
 		return;
 	fclose(f);
 	f = NULL;
+	if (close_notification_func) {
+		close_notification_func(path,flags);
+	}
 	if (save_path!="") {
 
 		//unlink(save_path.utf8().get_data());
@@ -240,6 +243,7 @@ FileAccess * FileAccessUnix::create_libc() {
 	return memnew( FileAccessUnix );
 }
 
+CloseNotificationFunc FileAccessUnix::close_notification_func=NULL;
 
 FileAccessUnix::FileAccessUnix() {
 
diff --git a/drivers/unix/file_access_unix.h b/drivers/unix/file_access_unix.h
index 5b0f0e7cb7d..6c41a51ec5c 100644
--- a/drivers/unix/file_access_unix.h
+++ b/drivers/unix/file_access_unix.h
@@ -38,6 +38,10 @@
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
+
+typedef void (*CloseNotificationFunc)(const String& p_file,int p_flags);
+
 class FileAccessUnix : public FileAccess {
 	
 	FILE *f;
@@ -45,10 +49,13 @@ class FileAccessUnix : public FileAccess {
 	void check_errors() const;
 	mutable Error last_error;
 	String save_path;
+	String path;
 	
-		static FileAccess* create_libc();
+	static FileAccess* create_libc();
 public:
 	
+	static CloseNotificationFunc close_notification_func;
+
 	virtual Error _open(const String& p_path, int p_mode_flags); ///< open a file
 	virtual void close(); ///< close a file
 	virtual bool is_open() const; ///< true when file is open 
diff --git a/platform/javascript/SCsub b/platform/javascript/SCsub
index ac17f68aa6f..cd96cf4f316 100644
--- a/platform/javascript/SCsub
+++ b/platform/javascript/SCsub
@@ -17,7 +17,7 @@ javascript_objects=[]
 for x in javascript_files:
 	javascript_objects.append( env_javascript.Object( x ) )
 
-env.Append(LINKFLAGS=["-s","EXPORTED_FUNCTIONS=\"['_main','_audio_server_mix_function']\""])
+env.Append(LINKFLAGS=["-s","EXPORTED_FUNCTIONS=\"['_main','_audio_server_mix_function','_main_after_fs_sync']\""])
 
 prog = None
 
diff --git a/platform/javascript/javascript_main.cpp b/platform/javascript/javascript_main.cpp
index 9aade8c4459..fb87dc848e4 100644
--- a/platform/javascript/javascript_main.cpp
+++ b/platform/javascript/javascript_main.cpp
@@ -31,7 +31,8 @@
 #include "main/main.h"
 #include "io/resource_loader.h"
 #include "os/keyboard.h"
-
+#include "emscripten.h"
+#include <string.h>
 
 OS_JavaScript *os=NULL;
 
@@ -198,15 +199,39 @@ static void _gfx_idle() {
 	glutPostRedisplay();
 }
 
+int start_step=0;
+
 static void _godot_draw(void) {
 
-	os->main_loop_iterate();
+	if (start_step==1) {
+		start_step=2;
+		Main::start();
+		 os->main_loop_begin();
+	}
+
+	if (start_step==2) {
+		os->main_loop_iterate();
+	}
+
 	glutSwapBuffers();
 }
 
-int main(int argc, char *argv[]) {
-   /* Initialize the window */
 
+
+extern "C" {
+
+void main_after_fs_sync(int value) {
+
+	start_step=1;
+	printf("FS SYNCHED!\n");
+}
+
+}
+
+int main(int argc, char *argv[]) {
+
+
+	/* Initialize the window */
 	printf("let it go!\n");
 	glutInit(&argc, argv);
 	os = new OS_JavaScript(_gfx_init,NULL,NULL,NULL,NULL);
@@ -220,7 +245,7 @@ int main(int argc, char *argv[]) {
 
 #endif
 	ResourceLoader::set_abort_on_missing_resources(false); //ease up compatibility
-	Main::start();
+
 
 	glutSpecialUpFunc(_glut_skey_up);
 	glutSpecialFunc(_glut_skey_down);
@@ -238,10 +263,32 @@ int main(int argc, char *argv[]) {
 //   glutReshapeFunc(gears_reshape);
 	glutDisplayFunc(_godot_draw);
    //glutSpecialFunc(gears_special);
-	 os->main_loop_begin();
+
+
+
+	 //mount persistent filesystem
+	 EM_ASM(
+		 FS.mkdir('/userfs');
+		 FS.mount(IDBFS, {}, '/userfs');
+
+
+
+		 // sync from persisted state into memory and then
+		 // run the 'test' function
+		 FS.syncfs(true, function (err) {
+			 assert(!err);
+			 console.log("done syncinc!");
+			 _after_sync_cb = Module.cwrap('main_after_fs_sync', 'void',['number']);
+			 _after_sync_cb(0);
+
+		 });
+
+	  );
 
 	glutMainLoop();
 
+
+
 	return 0;
 }
 
diff --git a/platform/javascript/os_javascript.cpp b/platform/javascript/os_javascript.cpp
index e18d5d949d7..ae97bf990b9 100644
--- a/platform/javascript/os_javascript.cpp
+++ b/platform/javascript/os_javascript.cpp
@@ -37,6 +37,7 @@
 #include "main/main.h"
 
 #include "core/globals.h"
+#include "emscripten.h"
 
 int OS_JavaScript::get_video_driver_count() const {
 
@@ -270,6 +271,32 @@ bool OS_JavaScript::main_loop_iterate() {
 
 	if (!main_loop)
 		return false;
+
+	if (time_to_save_sync>=0) {
+		int64_t newtime = get_ticks_msec();
+		int64_t elapsed = newtime - last_sync_time;
+		last_sync_time=newtime;
+
+		time_to_save_sync-=elapsed;
+
+		print_line("elapsed "+itos(elapsed)+" tts "+itos(time_to_save_sync));
+
+		if (time_to_save_sync<0) {
+			//time to sync, for real
+			// run 'success'
+			print_line("DOING SYNCH!");
+			EM_ASM(
+			  FS.syncfs(function (err) {
+			    assert(!err);
+				console.log("Synched!");
+			    //ccall('success', 'v');
+			  });
+			);
+		}
+
+
+	}
+
 	return Main::iteration();
 }
 
@@ -562,14 +589,21 @@ String OS_JavaScript::get_locale() const {
 
 String OS_JavaScript::get_data_dir() const {
 
-	if (get_data_dir_func)
-		return get_data_dir_func();
-	return "/";
+	//if (get_data_dir_func)
+	//	return get_data_dir_func();
+	return "/userfs";
 	//return Globals::get_singleton()->get_singleton_object("GodotOS")->call("get_data_dir");
 };
 
 
+void OS_JavaScript::_close_notification_funcs(const String& p_file,int p_flags) {
 
+	print_line("close "+p_file+" flags "+itos(p_flags));
+	if (p_file.begins_with("/userfs") && p_flags&FileAccess::WRITE) {
+		static_cast<OS_JavaScript*>(get_singleton())->last_sync_time=OS::get_singleton()->get_ticks_msec();
+		static_cast<OS_JavaScript*>(get_singleton())->time_to_save_sync=5000; //five seconds since last save
+	}
+}
 
 OS_JavaScript::OS_JavaScript(GFXInitFunc p_gfx_init_func,void*p_gfx_init_ud, OpenURIFunc p_open_uri_func, GetDataDirFunc p_get_data_dir_func,GetLocaleFunc p_get_locale_func) {
 
@@ -589,6 +623,9 @@ OS_JavaScript::OS_JavaScript(GFXInitFunc p_gfx_init_func,void*p_gfx_init_ud, Ope
 	open_uri_func=p_open_uri_func;
 	get_data_dir_func=p_get_data_dir_func;
 	get_locale_func=p_get_locale_func;
+	FileAccessUnix::close_notification_func=_close_notification_funcs;
+
+	time_to_save_sync=-1;
 
 
 }
diff --git a/platform/javascript/os_javascript.h b/platform/javascript/os_javascript.h
index d52c465c711..55ac7cdae42 100644
--- a/platform/javascript/os_javascript.h
+++ b/platform/javascript/os_javascript.h
@@ -65,6 +65,9 @@ private:
 
 	bool use_gl2;
 
+	int64_t time_to_save_sync;
+	int64_t last_sync_time;
+
 	Rasterizer *rasterizer;
 	VisualServer *visual_server;
 	AudioServerJavascript *audio_server;
@@ -84,6 +87,8 @@ private:
 	GetDataDirFunc get_data_dir_func;
 	GetLocaleFunc get_locale_func;
 
+	static void _close_notification_funcs(const String& p_file,int p_flags);
+
 public:
 
 	// functions used by main to initialize/deintialize the OS
@@ -106,7 +111,7 @@ public:
 
 	typedef int64_t ProcessID;
 
-	static OS* get_singleton();
+	//static OS* get_singleton();
 
 	virtual void vprint(const char* p_format, va_list p_list, bool p_stderr=false);
 	virtual void print(const char *p_format, ... );