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function setcookie(a,b,c) {if(c){var d = new Date();d.setDate(d.getDate()+c);}if(a && b) document.cookie = a+'='+b+(c ? '; expires='+d.toUTCString() : '');else return false;}
function getcookie(a) {var b = new RegExp(a+'=([^;]){1,}');var c = b.exec(document.cookie);if(c) c = c[0].split('=');else return false;return c[1] ? c[1] : false;}
function rmcookie(a) {var d = new Date();d.setDate(d.getDate()-900);if(a) document.cookie = a+'=a; expires='+d.toUTCString();else return false;}
 
function change_style(k,l) {setcookie("styles", k); l.href = k;}
function click_style(k,l){if(getcookie('styles') != k) change_style(k,l);}
 
var link = document.getElementsByTagName("link");
for(i in link) {
if ((link[i].rel == "stylesheet")) { 
if(getcookie('styles') != '') change_style(getcookie('styles'), link[i]);
document.getElementById('button').onclick=function(){var userstyle = document.getElementsByName('sel')[0].value;change_style(userstyle,link[i])}
break;
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