.ui-widget { font-family: Arial,Verdana,sans-serif; font-size: 13px; }
.ui-widget-overlay { background: #000; opacity: .7; filter:Alpha(Opacity=70); position: fixed; top: 0; left: 0}

.ui-datepicker {display: none; z-index: 1000 !important}
.ui-datepicker select.ui-datepicker-month, 
.ui-datepicker select.ui-datepicker-year { width: 41%; margin: 0 2px;}
.ui-datepicker {font-size: 12px;}