jQuery Datepicker Width

If you are using the jQuery datepicker in its default form, then just add this to your css and it should work:

.ui-datepicker {
width: 17em; /*what ever width you want*/
}

Reducing the font size of the calendar will reduce the width of the date picker.

You can reduce the font size by adding this css:

div.ui-datepicker
{
    font-size:10px;
}