var limi = 0;
var d_from = new Date();
var s_from = cal_generate_date(d_from);
if (makeDayNumber(s_from) < 2011091){
var limi = 1;
s_from = '01-04-2011'}
new calendar(s_from, 'book', 'date_from', 0, '23-10-2011');