function mouseOverImage1()
    {
        document.getElementById("img1").src = "http://pics.inaramky.cz/design/menu11.jpg";
    }
   
    function mouseOutImage1()
    {
        document.getElementById("img1").src = "http://pics.inaramky.cz/design/menu1.jpg";
    }

    function mouseOverImage2()
    {
        document.getElementById("img2").src = "http://pics.inaramky.cz/design/menu21.jpg";
    }
   
    function mouseOutImage2()
    {
        document.getElementById("img2").src = "http://pics.inaramky.cz/design/menu2.jpg";
    }

    function mouseOverImage3()
    {
        document.getElementById("img3").src = "http://pics.inaramky.cz/design/menu31.jpg";
    }
   
    function mouseOutImage3()
    {
        document.getElementById("img3").src = "http://pics.inaramky.cz/design/menu3.jpg";
    }

    function mouseOverImage4()
    {
        document.getElementById("img4").src = "http://pics.inaramky.cz/design/menu41.jpg";
    }
   
    function mouseOutImage4()
    {
        document.getElementById("img4").src = "http://pics.inaramky.cz/design/menu4.jpg";
    }