if (document.images) 
    {   var box1 = new Image()
        box1.src = "../img/gia.gif"
        var box1a = new Image()
        box1a.src = "../img/gi.gif"

        var box2 = new Image()
        box2.src = "../img/gia.gif"
        var box2a = new Image()
        box2a.src = "../img/gi.gif"

        var box3 = new Image()
        box3.src = "../img/gia.gif"
        var box3a = new Image()
        box3a.src = "../img/gi.gif"

        var box4 = new Image()
        box4.src = "../img/gia.gif"
        var box4a = new Image()
        box4a.src = "../img/gi.gif"

        var box5 = new Image()
        box5.src = "../img/gia.gif"
        var box5a = new Image()
        box5a.src = "../img/gi.gif"
        
        var box6 = new Image()
        box6.src = "../img/gia.gif"
        var box6a = new Image()
        box6a.src = "../img/gi.gif"
     }

function inact(imgName) 
    {   if (document.images)
        document[imgName].src = eval(imgName + '.src')
     }

function act(imgName) 
    {   if (document.images) 
        document[imgName].src = eval(imgName + 'a.src')
     }