function changeImage(txtImg,txtCap)
{
    version=0
    if (navigator.appVersion.indexOf("MSIE")!=-1)
    {
    temp=navigator.appVersion.split("MSIE")
    version=parseFloat(temp[1])
    }
    if (version>=5.5)
        {
        document.getElementById('imgSource').filters[0].Apply();
        document.getElementById('imgSource').src=unescape(txtImg)
        document.getElementById('imgSource').filters[0].Play();
        document.getElementById('imgCaption').innerHTML=unescape(txtCap)        
        }
    else
        {
        document.images.imgSource.src=unescape(txtImg)
        };
}