/* bsn.DOM.js */

var useBSNns;


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





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







//	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;
}