Leaflet-javascript for map

Leaflet-javascript for map I need a javascipt code like on [login to view URL] to be integrated on three other pages (no backend code necessary - just javascript): 1) map with several markers [login to view URL] - the map should show several markers 2) map with several gpx tracks [login to view URL] - the map should show several gpx tracks 3) map with one track and several markers http://www.best-cityguide.com/deutschland/durch+hamburg - the map should show a track and several markers A) MARKER behavior - click on marker opens small overlay that shows a given NAME for that location (e.g. "New York"); a "more details" link will open a new given URL B) TRACK behavior - click on track opens small overlay that shows a given NAME for the track (e.g. "Nice city walk"); a "more details" link will open a new given URL C) MAP - should show openstreetmap - should be responsive to be used on small mobile screens as well - should show my location on the map if used on a mobile device - should have a "locate me" button - should have + and - to zoom in and out - should always zoom and move so all markers and tracks are visible and in the center