function downbutton1() /* for button 1 aka about */
    {
   document.menubutton1.src ="Img1/about_down.png";
    }
    function upbutton1()
    {
    document.menubutton1.src ="Img1/about_off.png";
    }
    function hoverover1()
    {
    document.menubutton1.src ="Img1/about_over.png";
    }
    function hoveroffof1()
    {
    document.menubutton1.src ="Img1/about_off.png"
    }
    
function downbutton2() /* for button 2 aka service */
    {
   document.menubutton2.src ="Img1/service_down.png";
    }
    function upbutton2()
    {
    document.menubutton2.src ="Img1/service_off.png";
    }
    function hoverover2()
    {
    document.menubutton2.src ="Img1/service_over.png";
    }
    function hoveroffof2()
    {
    document.menubutton2.src ="Img1/service_off.png"
    }
      
function downbutton3() /* for button 3 aka extra */
    {
   document.menubutton3.src ="Img1/about_down.png";
    }
    function upbutton3()
    {
    document.menubutton3.src ="Img1/about_off.png";
    }
    function hoverover3()
    {
    document.menubutton3.src ="Img1/about_over.png";
    }
    function hoveroffof3()
    {
    document.menubutton3.src ="Img1/about_off.png"
    }
    
function downbutton4() /* for button 4 aka jobs */
    {
   document.menubutton4.src ="Img1/jobs_down.png";
    }
    function upbutton4()
    {
    document.menubutton4.src ="Img1/jobs_off.png";
    }
    function hoverover4()
    {
    document.menubutton4.src ="Img1/jobs_over.png";
    }
    function hoveroffof4()
    {
    document.menubutton4.src ="Img1/jobs_off.png"
    }
    
function downbutton5() /* for button 5 aka contact us */
    {
   document.menubutton5.src ="Img1/contact_down.png";
    }
    function upbutton5()
    {
    document.menubutton5.src ="Img1/contact_off.png";
    }
    function hoverover5()
    {
    document.menubutton5.src ="Img1/contact_over.png";
    }
    function hoveroffof5()
    {
    document.menubutton5.src ="Img1/contact_off.png"
    }