$(".showcase").showcase({
        css: {width: "740px", height: "210px"},
        animation: {type: "fade"},
        images: [
        {url:"img/170404slideum.jpg",
          description:"."},
        {url:"img/170832slidedois.jpg",
          description:"."},
        {url:"img/172243slidetres.jpg",
          description:"."},
        {url:"img/172751slidequatro.jpg",
          description:"."}],
        navigator: {
            position:"top-left",
             orientation:"vertical",
             css: {
                padding:"0px",
                margin:"0px 0px 0px 0px"}
            },
        titleBar: {css: {height:"15px"}}
    });