jquery-src/jquery.calendars.picker.js
function(inst) {
					var minDate = inst.curMinDate();
					return (!minDate || inst.drawDate.newDate().add(-1, 'd').
						compareTo(minDate) !== -1); }
function(inst) {
					var minDate = inst.curMinDate();
					return (!minDate || inst.drawDate.newDate().add(-1, 'd').
						compareTo(minDate) !== -1); }
function ( inst ) { var minDate = inst . curMinDate ( ) ; return ( ! minDate || inst . drawDate . newDate ( ) . add ( - 1 , 'd' ) . compareTo ( minDate ) !== - 1 ) ; }
Ctrl + Left
Ctrl + Left