http://stackoverflow.com/questions/16362366/click-function-not-working-on-div-class-created-on-the-fly
For dynamical created div, we should us
$('parental_statle_element').on('event','dynamical_element',function_name);
For dynamical created div, we should us
$('parental_statle_element').on('event','dynamical_element',function_name);
