JSP...forward

I've a login screen made in jsp...

Now i've this .....

<%!

        public boolean isBetween(Calendar fromTime, Calendar toTime) {

 

                Calendar c1 = Calendar.getInstance();

                if( c1.after(fromTime) && c1.before(toTime) )

                        return true;

                 return false;

        }

 

%>

 and this ..

%

 

                 //void set(int year, int month, int date, int hour, int minute, int second)

                 // IMP : Jan is 0

                //Calendar fromTime = Calendar.getInstance();

                //fromTime.set(2003, 3, 21, 0, 0, 0);

 

                //Calendar toTime = Calendar.getInstance();

                //toTime.set(2002, 5, 7, 0, 0, 0);

 

                Calendar fromTime = Calendar.getInstance();

                fromTime.set(2006, 03, 17, 9, 0, 0);

 

                Calendar toTime = Calendar.getInstance();

                toTime.set(2006, 04, 04, 0, 0, 0);

               if(isBetween(fromTime, toTime)) {

                   forward to down.jsp

}      



i need to forward....where do i place this code so that it checks the time fist before loading.....
urgent help required...thankz