// *** TO BE CUSTOMISED ***
var style_cookie_name = "style" ;
var style_cookie_duration = 30 ;
var style_domain = "berkeley.edu" ;
// *** END OF CUSTOMISABLE SECTION ***
// You do not need to customise anything below this line
function switch_style ( css_title )
{
// You may use this script on your site free of charge provided
// you do not remove this notice or the URL below. Script from
// https://www.thesitewizard.com/javascripts/change-style-sheets.shtml
var i, link_tag ;
for (i = 0, link_tag = document.getElementsByTagName("link") ;
i < link_tag.length ; i++ ) {
if ((link_tag[i].rel.indexOf( "stylesheet" ) != -1) &&
link_tag[i].title) {
link_tag[i].disabled = true ;
if (link_tag[i].title == css_title) {
link_tag[i].disabled = false ;
}
}
set_cookie( style_cookie_name, css_title,
style_cookie_duration, style_domain );
}
}
function set_style_from_cookie()
{
var css_title = get_cookie( style_cookie_name );
if (css_title.length) {
switch_style( css_title );
}
}
function set_cookie ( cookie_name, cookie_value,
lifespan_in_days, valid_domain )
{
// https://www.thesitewizard.com/javascripts/cookies.shtml
var domain_string = valid_domain ?
("; domain=" + valid_domain) : '' ;
document.cookie = cookie_name +
"=" + encodeURIComponent( cookie_value ) +
"; max-age=" + 60 * 60 *
24 * lifespan_in_days +
"; path=/" + domain_string ;
}
function get_cookie ( cookie_name )
{
// https://www.thesitewizard.com/javascripts/cookies.shtml
var cookie_string = document.cookie ;
if (cookie_string.length != 0) {
var cookie_array = cookie_string.split( '; ' );
for (i = 0 ; i < cookie_array.length ; i++) {
cookie_value = cookie_array[i].match ( cookie_name + '=(.*)' );
if (cookie_value != null) {
return decodeURIComponent ( cookie_value[1] ) ;
}
}
}
return '' ;
}
function get_suffix ( cookie_name )
{
if (get_cookie(cookie_name) == "dark") {
return '';
} else {
return 'inverted';
}
}