var cname = "ab4";
var ab = "";
if (!get_cookie(cname)) {
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}

if (get_cookie(window.cname)=="b") {
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  cssNode.type = 'text/css';
  cssNode.rel = 'stylesheet';
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  cssNode.media = 'screen';
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}

function set_cookie(c_name,value,expiredays) {
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function get_cookie(c_name) {
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}