$( document ).ready(function(){
	$.conteudo();
});

$.conteudo = function(){
	var menu = $( 'ul#menuConteudo' );
	var conteudo = $( 'div#conteudo' );
	var tabIndex;
	
	conteudo.children( 'div:first' ).show();
	
	menu.children( 'li' ).children( 'a' ).click(function(){
		var $this = $( this );
		
		$this.parent().addClass( 'ativo' ).siblings( '.ativo' ).removeClass( 'ativo' );
		tabIndex = $this.attr( 'tabindex' );
		
		conteudo.children( 'div' ).hide();
		conteudo.children( 'div.area_' + tabIndex ).show();
		
		return false;
	});
}