This might seem like a stupid easy question to some of you, but i'm new to jquery and can't get my datepicker to work like it should.

This is my textbox where the datepicker is attached to:

<asp:TextBox runat="server" ID="StartMonth" AutoPostBack="true" class="month-picker" />

and here is how i attach the datepicker. (I have multiple TextBoxes where the datepicker should be attached to, so i used the class attribute instead of the id.)

$(".month-picker").datepicker({ dateFormat: 'MM yy', changeYear: true, yearRange: '-9:+9' });

What i want to archive is when i click into the textbox where the text is "August 2012" it should set the pre-selected date of the datepicker to this date.

Can anyone help? Kind regards.