function getCookieVal(offset){
    var endstr = document.cookie.indexOf(";", offset);
    if (endstr == -1) 
        endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
}

function FixCookieDate(date){
    var base = new Date(0);
    var skew = base.getTime(); // dawn of (Unix) time - should be 0
    if (skew > 0) // Except on the Mac - ahead of its time
        date.setTime(date.getTime() - skew);
}

function GetCookie(name){
    var arg = name + "=";
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;
    while (i < clen) {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg) 
            return getCookieVal(j);
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) 
            break;
    }
    return null;
}

function SetCookie(name, value, expires, path, domain, secure){
    document.cookie = name + "=" + escape(value) +
    ((expires) ? "; expires=" + expires.toGMTString() : "") +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    ((secure) ? "; secure" : "");
}

function DeleteCookie(name, path, domain){
    if (GetCookie(name)) {
        document.cookie = name + "=" +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}

function linksExternal(){
    if (document.getElementsByTagName) {
        var anchors = document.getElementsByTagName("a");
        for (var i = 0; i < anchors.length; i++) {
            var anchor = anchors[i];
            if (anchor.getAttribute("rel") == "external") {
                anchor.target = "_blank";
            }
        }
    }
}

function checkHeight(){
    var obj = document.getElementById('center');
    if (obj.offsetHeight < 700) {
        obj.style.height = '700px';
    }
}

function stat(){
    var res;
    win = window.screen;
    if (window.screen) 
        res = win.width + 'x' + win.height;
    var czas = new Date();
    czas.setTime(czas.getTime() + (365 * 24 * 60 * 60 * 1000));
    SetCookie("stat", res, czas, '/');
}

function slide(field){
    if (document.getElementById(field).style.display == 'none') 
        new Effect.SlideDown(field, {
            duration: 0.6
        });
    //xajax.$(field).style.display = 'block';
    else 
        new Effect.SlideUp(field, {
            duration: 0.6
        });
    //xajax.$(field).style.display = 'none';
}

function m_over(value, id){
    value.style.color = '#e0e0e0';
    value.style.background = '#4c4c4c';
    document.getElementById('sm-' + id).style.display = 'block';
}

function m_out(value, id){
    value.style.color = '#7a7a7a';
    value.style.background = 'transparent';
    document.getElementById('sm-' + id).style.display = 'none';
}

function sm_over(id){
    document.getElementById('m-' + id).style.color = '#e0e0e0';
    document.getElementById('m-' + id).style.background = '#4c4c4c';
    document.getElementById('sm-' + id).style.display = 'block';
}

function sm_out(id){
    document.getElementById('m-' + id).style.color = '#7a7a7a';
    document.getElementById('m-' + id).style.background = 'transparent';
    document.getElementById('sm-' + id).style.display = 'none';
}

function drukuj(url,sz,wy) {
 okienko =  window.open(""+ url +"", "drukowanie", "width=" + sz +",height=" + wy + ", toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=no");
}