- // Grab data from the $tzSelect value
- minuteDiff = parseInt( type.split( '|' )[ 1 ], 10 ) || 0;
- $tzTextbox.val( minutesToHours( minuteDiff ) );
+ // Time zone not manually specified by user
+ if ( type === 'guess' ) {
+ // Get browser timezone & fill it in
+ minuteDiff = -( new Date().getTimezoneOffset() );
+ $tzTextbox.val( minutesToHours( minuteDiff ) );
+ $tzSelect.val( 'other' );
+ $tzTextbox.prop( 'disabled', false );
+ } else {
+ // Grab data from the $tzSelect value
+ minuteDiff = parseInt( type.split( '|' )[ 1 ], 10 ) || 0;
+ $tzTextbox.val( minutesToHours( minuteDiff ) );
+ }
+
+ // Set defaultValue prop on the generated box so we don't trigger the
+ // unsaved preferences check
+ $tzTextbox.prop( 'defaultValue', $tzTextbox.val() );