//self.resizeTo(800,600);

function authentication(form)
{
    vLogin = form.logged_username.value;
    if (vLogin == "")
    {
        alert("Terá de inserir um login válido!");
        return false;
    }
    vPassword = form.logged_user_password.value;
    if (vPassword == "")
    {
        alert("Terá de inserir uma palavra passe válida!");
        return false;
    }
    return true;
}

function validaPassword(form)
{
    var firstPassword = form.act_password.value;
    var secondPassword = form.act_password1.value;
    var tamanho = form.act_password.value.length;
    if (firstPassword != secondPassword)
    {
        alert("Palavras Passe diferentes!");
        form.act_password.value="";
        form.act_password1.value="";
        return false;
    }
    if (tamanho <8)
    {
        alert("Palavra passe não cumpre requisitos de segurança.");
        form.act_password.value="";
        form.act_password1.value="";
        return false;
    }
    return true;
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() 
{
	if (document.images && (preloadFlag == true))
	{
		for (var i=0; i<changeImages.arguments.length; i+=2)
		{
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() 
{
	if (document.images) 
	{
		A_empresa_02_over = newImage("images/menu-de-empresa_02-over.gif");
		A_empresa_02_down = newImage("images/menu-de-empresa_02-down.gif");
		Novidades_02_over = newImage("images/menu-de-empresa_03-over.gif");
		Novidades_02_down = newImage("images/menu-de-empresa_03-down.gif");
		Catalogo_02_over = newImage("images/menu-de-empresa_04-over.gif");
		Catalogo_02_down = newImage("images/menu-de-empresa_04-down.gif");
		Encomendas_02_over = newImage("images/menu-de-empresa_05-over.gif");
		Encomendas_02_down = newImage("images/menu-de-empresa_05-down.gif");
		Portugues_02_over = newImage("images/Portugues_01-over.gif");
		Portugues_02_down = newImage("images/Portugues_01-down.gif");
		Espanhol_02_over = newImage("images/Espanhol_01-over.gif");
		Espanhol_02_down = newImage("images/Espanhol_01-down.gif");
		Ingles_02_over = newImage("images/Ingles_01-over.gif");
		Ingles_02_down = newImage("images/Ingles_01-down.gif");
		Catalogo_01_over = newImage("images/menu-de-empresa_07-over.gif");
		Catalogo_01_down = newImage("images/menu-de-empresa_07-down.gif");		
		Inserir_01_over = newImage("images/menu-de-empresa_08-over.gif");
		Inserir_01_down = newImage("images/menu-de-empresa_08-down.gif");
		Estado_01_over = newImage("images/menu-de-empresa_09-over.gif");
		Estado_01_down = newImage("images/menu-de-empresa_09-down.gif");														
		homepage_01_over = newImage("images/homepage_01-over.gif");
		homepage_01_down = newImage("images/homepage_01-down.gif");
  		missao_01_over = newImage("images/missao_01-over.gif");
		missao_01_down = newImage("images/missao_01-down.gif");
		historia_01_over = newImage("images/historia_01-over.gif");
		historia_01_down = newImage("images/historia_01-down.gif");
        equipamentos_01_over = newImage("images/equipamentos_01-over.gif");
		equipamentos_01_down = newImage("images/equipamentos_01-down.gif");
		indicadores_vendas_01_over = newImage("images/indicadores_vendas_01-over.gif");
		indicadores_vendas_01_down = newImage("images/indicadores_vendas_01-down.gif");
		Consultar_01_over = newImage("images/Consultar_01-over.gif");
		Consultar_01_down = newImage("images/Consultar_01-down.gif");
		Inserir_01_over = newImage("images/Inserir_01-over.gif");
		Inserir_01_down = newImage("images/Inserir_01-down.gif");
		swatch_book_01_over = newImage("images/swatch_book_01-over.gif");
		swatch_book_01_down = newImage("images/swatch_book_01-down.gif");
		add_order_01_over = newImage("images/add_order_01-over.gif");
		add_order_01_down = newImage("images/add_order_01-down.gif");
		order_status_01_over = newImage("images/order_status_01-over.gif");
		order_status_01_down = newImage("images/order_status_01-down.gif");
		muestario_01_over = newImage("images/muestario_01-over.gif");
		muestario_01_down = newImage("images/muestario_01-down.gif");
		Adicionar_pedido_01_over = newImage("images/Adicionar_pedido_01-over.gif");
		Adicionar_pedido_01_down = newImage("images/Adicionar_pedido_01-down.gif");
		situacion_pedido_01_over = newImage("images/situacion_pedido_01-over.gif");
		situacion_pedido_01_down = newImage("images/situacion_pedido_01-down.gif");
		preloadFlag = true;
	}
}