[a="class="jp zh"onclick="a=document.styleSheets.item(document.styleSheets.length - 1);a.deleteRule(a.cssRules.length - 1);a.insertRule('.en { display: initial; }', 2);return false]en[/a] [a="class="en zh"onclick="a=document.styleSheets.item(document.styleSheets.length - 1);a.deleteRule(a.cssRules.length - 1);a.insertRule('.jp { display: initial; }', 2);return false]jp[/a] [a="class="en jp"onclick="a=document.styleSheets.item(document.styleSheets.length - 1);a.deleteRule(a.cssRules.length - 1);a.insertRule('.zh { display: initial; }', 2);return false]zh[/a]

Internationalization ver: [a=#"class="i18n en]English[/a][a=#"class="i18n jp]Japanese[/a][a=#"class="i18n zh]Chinese[/a]