Couldn't get jquery datepicker onshow function triggered

Using: jquery-1.4.4, jquery-ui-1.7.2

Problem: go through several sections, every section has dateFrom and dateTo. I need to prepopulate minDate of dateTo with currently selected date of dateFrom the right place is dateTo.onShow

Symptoms: setting the break point inside onShow function, clicking datepicker dateTo, not stopped at bp.

here is the code:

$(function() {
  $('input[name^="section"]').each(function(i){
  var sectionId = $(this).attr('sectionId');
  var date2 = "#date2";
  date2 = date2.concat(sectionId);
  if ($(this).attr('checked')) {
     $(date2).datepicker().datepicker('enable');
  } else {
     $(date2).datepicker().datepicker('disable');
  }
  $(date2).datepicker({
    onShow: function(picker, inst) {
      var sectionId = $(picker).attr('sectionId');
      var date1 = "#date1";
      date1 = date1.concat(sectionId);
      var dateMin = $(date1).val();
      picker.datepicker('minDate', dateMin);
    }
 });
});
}); 

Thanks, VB

Answer: Here is simple fix:

$(function() {
 $('input[name^="section"]').each(function(i){
   var sectionId = $(this).attr('sectionId');
   var date2 = "#date2";
   date2 = date2.concat(posterId);
   $(date2).datepicker('option', {
      beforeShow: processUnpostMinDate
   });
 });
});
function processUnpostMinDate(picker) {
  var posterId = $(picker).attr('sectionId');
  var date1 = "#date1";
  date1 = date1.concat(sectionId);
  return {
     minDate: $(date1).datepicker("getDate") 
  };
}

Regards,

VB

I believe you want beforeShow. I don't see an onShow in the documentation.