var DEF_N_BOUND = 83.5;
var DEF_E_BOUND = -50;
var DEF_S_BOUND = 40.5;
var DEF_W_BOUND = -142.5;

var DEF_X0 = (DEF_E_BOUND + DEF_W_BOUND)/2;
var DEF_Y0 = (DEF_N_BOUND + DEF_S_BOUND)/2+10;
var DEF_ZOOM = 2;
var MAPS_ZOOM = 3;

var TILES_DOMAIN = "static#.cccsn.ca";

function defined(v) { return (!(!(document.getElementById(v)))) }