function setCookieWF(name, value, expires) {
    var cookieStr = escape(name) +"=";
    if (typeof value != "undefined") {
        cookieStr += escape(value);
    }
    if (!expires) {
        expires = new Date();
        expires.setTime(expires.getTime()+24*60*60*1000);
    }
    cookieStr += "; expires="+ expires.toGMTString() +"; path=/";
    document.cookie = cookieStr;
};


function getCookieWF(name){
    var str = '; '+ document.cookie +';';
    var index = str.indexOf('; '+ escape(name) +'=');
    if (index != -1) {
        index += name.length+3;
        var value = str.slice(index, str.indexOf(';', index));
        return unescape(value);
    }
};


function getURLParamWF(strParamName){
    var strReturn = "";
    var strHref = window.location.href;
    if ( strHref.indexOf("?") > -1 ){
        var strQueryString = strHref.substr(strHref.indexOf("?")).toLowerCase();
        var aQueryString = strQueryString.split("&");
        for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
            if (
                aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
                var aParam = aQueryString[iParam].split("=");
                strReturn = aParam[1];
                break;
            }
        }
    }
    return strReturn;
}

function konwersje(){
    var a=getURLParamWF('a');
    if (a=='' || a=='undefined'){
        a=getCookieWF('akcja');
    }else{
        setCookieWF('akcja',a);
    }
    document.write('<span style="color:#F7F9F4;">a='+a+'</span>');

}