content of a datebox

[jaimi]

I created a datebox and used the following code to add a tooltip to it:

 if ($("#HOM_GEBURTSDATUM").length) {
  $('#HOM_GEBURTSDATUM').datebox();
  var tb = $('#HOM_GEBURTSDATUM').datebox('textbox');
  tb.add(tb.parent())
   .css("background-color","#1a1a1a")
   .css("color","#fff");
  tb.parent().tooltip({
     position: 'right',
     content: '<span>Geben Sie das Geburtsdatum des Pferdes ein.</span>'
    })
 }

Now, when I delete the value at the field within the form and submit the form, it still posts the former value.
My analysis shows that the value still appers with the ID of the datebox whereas the textbox (parent) has neighter id nor name.
How to fetch the value of the testbox?
THX, Jaimi

[stworthy]

How do you delete the datebox value? Please show some code snippets to describe your issue in more detail.

[jaimi]

It works well, when the value is changed by using the select-box of the datebox. I delete the content via keyboard delete key. Then the field content is empty.
I do not delete via javascript code.
Jaimi