function tabs_class(id) {
	this.id = id;
}

function tabs_setItem(name, state) {
	// set tab
	tab = document.getElementById(this.id + '-tab-' + name);
	if (tab) tab.className = state;
	// set content
	content = document.getElementById(this.id + '-content-' + name);
	if (content) content.className = state;
}

function tabs_Select(name) {
	// set current - inactive
	this.setItem(this.current, 'inactive');
	
	// set new current item - active
	this.current = name;
	this.setItem(this.current, 'active');
}

tabs_class.prototype.id = 'tabs';
tabs_class.prototype.current = 'none';
tabs_class.prototype.setItem = tabs_setItem;
tabs_class.prototype.Select = tabs_Select;