diff options
Diffstat (limited to 'phpBB/styles/prosilver/template/timezone.js')
| -rw-r--r-- | phpBB/styles/prosilver/template/timezone.js | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/phpBB/styles/prosilver/template/timezone.js b/phpBB/styles/prosilver/template/timezone.js new file mode 100644 index 0000000000..5d07b1d3ad --- /dev/null +++ b/phpBB/styles/prosilver/template/timezone.js @@ -0,0 +1,54 @@ +function phpbb_preselect_tz_select() +{ + var selector = document.getElementsByClassName('tz_select')[0]; + if (selector.value) + { + return; + } + // The offset returned here is in minutes and negated. + // http://www.w3schools.com/jsref/jsref_getTimezoneOffset.asp + var offset = (new Date()).getTimezoneOffset(); + if (offset < 0) + { + var sign = '+'; + offset = -offset; + } + else + { + var sign = '-'; + } + var minutes = offset % 60; + var hours = (offset - minutes) / 60; + if (hours < 10) + { + hours = '0' + hours.toString(); + } + else + { + hours = hours.toString(); + } + if (minutes < 10) + { + minutes = '0' + minutes.toString(); + } + else + { + minutes = minutes.toString(); + } + var prefix = 'GMT' + sign + hours + ':' + minutes; + var prefix_length = prefix.length; + for (var i = 0; i < selector.options.length; ++i) + { + var option = selector.options[i]; + if (option.value.substring(0, prefix_length) == prefix) + { + // Firefox scrolls the selector only to put the option into view; + // for negative-offset timezones, this means the first timezone + // of a particular offset will be the bottom one, and selected, + // with all other timezones not visible. Not much can be done + // about that here unfortunately. + option.selected = true; + break; + } + } +} |