Ext.Panel.prototype.addButton = function(config, handler, scope) {
	var bc = {
		handler : handler,
		scope : scope,
		hideParent : true
	};
	if (typeof config == "string") {
		bc.text = config;
	} else {
		Ext.apply(bc, config);
	}
	var btn;
	if (config.xtype) {
		btn = Ext.ComponentMgr.create(bc,config.xtype);
	} else {
		bc.minWidth = this.minButtonWidth, btn = new Ext.Button(bc);
	}
	if (!this.buttons) {
		this.buttons = [];
	}
	this.buttons.push(btn);
	return btn;
};