onCalendarShow

fires when a calendar pops up in the grid

void onCalendarShow(object myCal,string|number row_id,number col_ind);

myCal	object	the calendar object
row_id	string\|number	the id of the related row
col_ind	number	the index of the related column

grid.attachEvent("onCalendarShow",function(myCal,row_id,col_ind){
    //your code here
});