function NiftyCheck() {
    if (!document.getElementById || !document.createElement)
        return (false);
    isXHTML = /html\:/.test(document.getElementsByTagName('body')[0].nodeName);
    if (Array.prototype.push == null) {
        Array.prototype.push = function() {
            this[this.length] = arguments[0]; return (this.length);
        }
    }
    return (true);
}

function Rounded(selector, wich, bk, color, opt) {
    var i, prefixt, prefixb, cn = "r", ecolor = "", edges = false, eclass = "", b = false, t = false;

    if (color == "transparent") {
        cn = cn + "x";
        ecolor = bk;
        bk = "transparent";
    }
    else if (bk == "transparent") {
        //    cn = cn + "x";
        ecolor = color;
    }
    else if (opt && opt.indexOf("border") >= 0) {
        var optar = opt.split(" ");
        for (i = 0; i < optar.length; i++)
            if (optar[i].indexOf("#") >= 0) ecolor = optar[i];
        if (ecolor == "") ecolor = "#666";
        cn += "e";
        edges = true;
    }
    else if (opt && opt.indexOf("smooth") >= 0) {
        cn += "a";
        ecolor = Mix(bk, color);
    }
    if (opt && opt.indexOf("small") >= 0) cn += "s";
    prefixt = cn;
    prefixb = cn;
    if (wich.indexOf("all") >= 0) { t = true; b = true }
    else if (wich.indexOf("top") >= 0) t = "true";
    else if (wich.indexOf("tl") >= 0) {
        t = "true";
        if (wich.indexOf("tr") < 0) prefixt += "l";
    }
    else if (wich.indexOf("tr") >= 0) {
        t = "true";
        prefixt += "r";
    }
    if (wich.indexOf("bottom") >= 0) b = true;
    else if (wich.indexOf("bl") >= 0) {
        b = "true";
        if (wich.indexOf("br") < 0) prefixb += "l";
    }
    else if (wich.indexOf("br") >= 0) {
        b = "true";
        prefixb += "r";
    }
    var v = getElementsBySelector(selector);
    var l = v.length;
    for (i = 0; i < l; i++) {
        if (edges) AddBorder(v[i], ecolor);
        if (t) AddTop(v[i], bk, color, ecolor, prefixt);
        if (b) AddBottom(v[i], bk, color, ecolor, prefixb);
    }
}

function AddBorder(el, bc) {
    var i;
    if (!el.passed) {
        if (el.childNodes.length == 1 && el.childNodes[0].nodeType == 3) {
            var t = el.firstChild.nodeValue;
            el.removeChild(el.lastChild);
            var d = CreateEl("span");
            d.style.display = "block";
            d.appendChild(document.createTextNode(t));
            el.appendChild(d);
        }
        for (i = 0; i < el.childNodes.length; i++) {
            if (el.childNodes[i].nodeType == 1) {
                el.childNodes[i].style.borderLeft = "1px solid " + bc;
                el.childNodes[i].style.borderRight = "1px solid " + bc;
            }
        }
    }
    el.passed = true;
}

function AddTop(el, bk, color, bc, cn) {
    var i, lim = 4, d = CreateEl("b");

    if (cn.indexOf("s") >= 0) lim = 2;
    if (bc) d.className = "artop";
    else d.className = "rtop";
    d.style.backgroundColor = bk;
    for (i = 1; i <= lim; i++) {
        var x = CreateEl("b");
        x.className = cn + i;
        x.style.backgroundColor = color;
        if (bc) x.style.borderColor = bc;
        d.appendChild(x);
    }
    el.style.paddingTop = 0;
    el.insertBefore(d, el.firstChild);
}

function AddBottom(el, bk, color, bc, cn) {
    var i, lim = 4, d = CreateEl("b");

    if (cn.indexOf("s") >= 0) lim = 2;
    if (bc) d.className = "artop";
    else d.className = "rtop";
    d.style.backgroundColor = bk;
    for (i = lim; i > 0; i--) {
        var x = CreateEl("b");
        x.className = cn + i;
        x.style.backgroundColor = color;
        if (bc) x.style.borderColor = bc;
        d.appendChild(x);
    }
    el.style.paddingBottom = 0;
    el.appendChild(d);
}

function CreateEl(x) {
    if (isXHTML) return (document.createElementNS('http://www.w3.org/1999/xhtml', x));
    else return (document.createElement(x));
}

function getElementsBySelector(selector) {
    var i, selid = "", selclass = "", tag = selector, f, s = [], objlist = [];

    //descendant selector like "tag#id tag"
    if (selector.indexOf(" ") > 0) 
    {
        s = selector.split(" ");
        var fs = s[0].split("#");
        if (fs.length == 1) return (objlist);
        f = document.getElementById(fs[1]);
        if (f) return (f.getElementsByTagName(s[1]));
        return (objlist);
    }

    //id selector like "tag#id"
    if (selector.indexOf("#") > 0) 
    { 
        s = selector.split("#");
        tag = s[0];
        selid = s[1];
    }
    
    if (selid != "") {
        f = document.getElementById(selid);
        if (f) objlist.push(f);
        return (objlist);
    }

    //class selector like "tag.class"
    if (selector.indexOf(".") > 0) 
    {  
        s = selector.split(".");
        tag = s[0];
        selclass = s[1];

        var v = document.getElementsByTagName(tag);  // tag selector like "tag"
        if (selclass == "")
        return (v);

        for (i = 0; i < v.length; i++) 
        {
            if (v[i].className.indexOf(selclass) >= 0) 
            {
                objlist.push(v[i]);
            }
        }
    }

    if (selector.indexOf("^") > 0) 
    {
        s = selector.split("^");
        selclass = s[1];
        a = document.getElementsByTagName("div");
        objlist = new Array();
        for (i = 0; i < a.length; i++) 
        {
            c = a[i].className;
            if (c != "") if (c.indexOf(selclass) == 0) objlist[objlist.length] = a[i];
        }
        return (objlist);
    }
}

function Mix(c1, c2) {
    var i, step1, step2, x, y, r = new Array(3);
    if (c1.length == 4) step1 = 1;
    else step1 = 2;
    if (c2.length == 4) step2 = 1;
    else step2 = 2;
    for (i = 0; i < 3; i++) {
        x = parseInt(c1.substr(1 + step1 * i, step1), 16);
        if (step1 == 1) x = 16 * x + x;
        y = parseInt(c2.substr(1 + step2 * i, step2), 16);
        if (step2 == 1) y = 16 * y + y;
        r[i] = Math.floor((x * 50 + y * 50) / 100);
    }
    return ("#" + r[0].toString(16) + r[1].toString(16) + r[2].toString(16));
}