/**
 *  author:             Timothy Groves - http://www.brandspankingnew.net
 *      version:        1.5 - 2006-08-03
 *
 *      requires:       nothing
 *
 */

var useBSNns;

if (useBSNns)
{
        if (typeof(bsn) == "undefined")
                bsn = {}
        _bsn = bsn;
}
else
{
        _bsn = this;
}


if (typeof(_bsn.DOM) == "undefined")
        _bsn.DOM = {}




_bsn.DOM.createElement = function ( type, attr, cont, html )
{
        var ne = document.createElement( type );
        if (!ne)
                return false;
                
        for (var a in attr)
                ne[a] = attr[a];
                
        if (typeof(cont) == "string" && !html)
                ne.appendChild( document.createTextNode(cont) );
        else if (typeof(cont) == "string" && html)
                ne.innerHTML = cont;
        else if (typeof(cont) == "object")
                ne.appendChild( cont );

        return ne;
}





_bsn.DOM.clearElement = function ( id )
{
        var ele = this.getElement( id );
        
        if (!ele)
                return false;
        
        while (ele.childNodes.length)
                ele.removeChild( ele.childNodes[0] );
        
        return true;
}









_bsn.DOM.removeElement = function ( ele )
{
        var e = this.getElement(ele);
        
        if (!e)
                return false;
        else if (e.parentNode.removeChild(e))
                return true;
        else
                return false;
}





_bsn.DOM.replaceContent = function ( id, cont, html )
{
        var ele = this.getElement( id );
        
        if (!ele)
                return false;
        
        this.clearElement( ele );
        
        if (typeof(cont) == "string" && !html)
                ele.appendChild( document.createTextNode(cont) );
        else if (typeof(cont) == "string" && html)
                ele.innerHTML = cont;
        else if (typeof(cont) == "object")
                ele.appendChild( cont );
}









_bsn.DOM.getElement = function ( ele )
{
        if (typeof(ele) == "undefined")
        {
                return false;
        }
        else if (typeof(ele) == "string")
        {
                var re = document.getElementById( ele );
                if (!re)
                        return false;
                else if (typeof(re.appendChild) != "undefined" ) {
                        return re;
                } else {
                        return false;
                }
        }
        else if (typeof(ele.appendChild) != "undefined")
                return ele;
        else
                return false;
}







_bsn.DOM.appendChildren = function ( id, arr )
{
        var ele = this.getElement( id );
        
        if (!ele)
                return false;
        
        
        if (typeof(arr) != "object")
                return false;
                
        for (var i=0;i<arr.length;i++)
        {
                var cont = arr[i];
                if (typeof(cont) == "string")
                        ele.appendChild( document.createTextNode(cont) );
                else if (typeof(cont) == "object")
                        ele.appendChild( cont );
        }
}





//      var opt = new Array( '1'=>'lorem', '2'=>'ipsum' );
// var sel = '2';

_bsn.DOM.createSelect = function ( attr, opt, sel )
{
        var select = this.createElement( 'select', attr );
        for (var a in opt)
        {
        
                var o = {id:a};
                if (a == sel)   o.selected = "selected";
                select.appendChild( this.createElement( 'option', o, opt[a] ) );
                
        }
        
        return select;
}




_bsn.DOM.getPos = function ( ele )
{
        var ele = this.getElement(ele);

        var obj = ele;

        var curleft = 0;
        if (obj.offsetParent)
        {
                while (obj.offsetParent)
                {
                        curleft += obj.offsetLeft
                        obj = obj.offsetParent;
                }
        }
        else if (obj.x)
                curleft += obj.x;


        var obj = ele;
        
        var curtop = 0;
        if (obj.offsetParent)
        {
                while (obj.offsetParent)
                {
                        curtop += obj.offsetTop
                        obj = obj.offsetParent;
                }
        }
        else if (obj.y)
                curtop += obj.y;

        return {x:curleft, y:curtop}
}