//   Written by Terry Friesen,  tfriesen@mts.net
//   http://www.mts.net/~tfriesen/dhtml/

//   This script gives Netscape 6 the following IE methods:
//   removeNode(),replaceNode(),swapNode(),applyElement(),contains(),
//   insertAdjacentText(),insertAdjacentHTML(),insertAdjacentElement()

if (self.Node && self.Node.prototype) {
    Node.prototype.removeNode = remove_Node;
    Node.prototype.replaceNode = replace_Node;
    Node.prototype.swapNode = swap_Node;
    Element.prototype.applyElement = apply_Element;
    Element.prototype.contains = _contains;
    Element.prototype.insertAdjacentText = insertAdj_Text;
    Element.prototype.insertAdjacentHTML = insertAdj_HTML;
    Element.prototype.insertAdjacentElement = insertAdj_El;
    Element.prototype.insert__Adj = insert__Adj;
}

function remove_Node(a1)
{
    var p = this.parentNode;
    if (p && !a1) {
        var df = document.createDocumentFragment();
        for(var a  =  0; a < this.childNodes.length; a++) {
            df.appendChild(this.childNodes[a]);
        }
        p.insertBefore(df,this);
    }
    return p ? p.removeChild(this) : this;
}

function replace_Node(a1)
{
    return this.parentNode.replaceChild(a1,this);
}

function swap_Node(a1)
{
    var p = a1.parentNode;
    var s = a1.nextSibling;
    this.parentNode.replaceChild(a1,this);
    p.insertBefore(this,s);
    return this;
}

function apply_Element(a1,a2)
{
    if(!a1.splitText) {
        a1.removeNode();
        if(a2 && a2.toLowerCase() == "inside") {
            for (var a = 0; a < this.childNodes.length; a++) {
                a1.appendChild(this.childNodes[a])
            }
            this.appendChild(a1);
        } else {
            var p = this.parentNode;
            p.insertBefore(a1,this);
            a1.appendChild(this);
        }
        return a1;
    }
}

function _contains(a1)
{
    var r = document.createRange();
    r.selectNode(this);
    return r.compareNode(a1) == 3;
}

function insertAdj_Text(a1,a2)
{
    var t = document.createTextNode(a2 || "");
    this.insert__Adj(a1,t);
}

function insertAdj_HTML(a1,a2)
{
    var r = document.createRange();
    r.selectNode(this);
    var t = r.createContextualFragment(a2);
    this.insert__Adj(a1,t);
}

function insertAdj_El(a1,a2)
{
    this.insert__Adj(a1,a2);
    return a2;
}

function insert__Adj(a1,a2)
{
    var p = this.parentNode;
    var s = a1.toLowerCase();
    if (s == "beforebegin") {p.insertBefore(a2,this)}
    if (s == "afterend") {p.insertBefore(a2,this.nextSibling)}
    if (s == "afterbegin") {this.insertBefore(a2,this.childNodes[0])}
    if (s == "beforeend") {this.appendChild(a2)}
}