var w_global_obj;
var dat = new Date();
var w_golbal_count_millseconds;
function w_click_twice(w_current_obj, w_period) {
    console.log(w_golbal_count_millseconds);
    var current = dat.getTime();
    var w_this_period = current - w_golbal_count_millseconds;
    w_golbal_count_millseconds = current;
    if (w_global_obj != w_current_obj) {
        w_global_obj = w_current_obj;
        return true;
    } else if (w_this_period > w_period) {
        return true;
    } else {
        return false;
    }
}

<script src="w_fun_click.js"></script>