treenode.prototype.toggle = function(){
	if(this.opened){
		this.collapse();
	}else{
		this.expand();
	}
}

treenode.prototype.expand = function(){

	if(this.src || this.oNode.oNodeChilds.childNodes.length){
		
		if(this.src && !this.loaded){
			this.load();
			return;
		}
		
		this.oNode.oNodeChilds.style.display = 'block';
		this.oNode.oNodeIcon.src = this.openIcon;
		this.opened = true;
		
		// set toggle icons
		if(this.getNextSibling()){
			this.oNodeImg.src = treeConfig.tMinusIcon;
			this.oNode.style.backgroundImage = 'url(' + treeConfig.iIcon + ')';
		}else{
			this.oNodeImg.src = treeConfig.lMinusIcon;
			this.oNode.style.backgroundImage = 'url()';
		}
		
		fnResizeMainFrame_fromMain();
	}
}

treenode.prototype.collapse = function(){
	if(this.opened){
		this.oNode.oNodeChilds.style.display = 'none';
		this.oNode.oNodeIcon.src = this.icon;
		this.opened = false;
		
		// set toggle icons
		if(this.getNextSibling()){
			this.oNodeImg.src = treeConfig.tPlusIcon;
		}else{
			this.oNodeImg.src = treeConfig.lPlusIcon;
		}
		this.oNode.style.backgroundImage = 'url()';
		
		fnResizeMainFrame_fromMain();
	}
}

treenode.prototype.expandAll = function(){
	var i;
	this.expand();
	
	for(i=0;i<this.oNode.oNodeChilds.childNodes.length;i++){
		this.oNode.oNodeChilds.childNodes[i].obj.expandAll();
	}
}

treenode.prototype.collapseAll = function(){
	var i;
	this.collapse();
	
	for(i=0;i<this.oNode.oNodeChilds.childNodes.length;i++){
		this.oNode.oNodeChilds.childNodes[i].obj.collapseAll();
	}
}