function show1()                                                                                          {
        if(document.getElementById)
{
document.getElementById("img1").style.display="block";
document.getElementById("img2").style.display="none";
document.getElementById("img3").style.display="none";
document.getElementById("img4").style.display="none";
document.getElementById("img5").style.display="none";
document.getElementById("img6").style.display="none";
document.getElementById("img7").style.display="none";
 }
}
function show2()                                                                                          {
        if(document.getElementById)
{
document.getElementById("img1").style.display="none";
document.getElementById("img2").style.display="block";
document.getElementById("img3").style.display="none";
document.getElementById("img4").style.display="none";
document.getElementById("img5").style.display="none";
document.getElementById("img6").style.display="none";
document.getElementById("img7").style.display="none";
 }
}
function show3()                                                                                          {
        if(document.getElementById)
{
document.getElementById("img1").style.display="none";
document.getElementById("img2").style.display="none";
document.getElementById("img3").style.display="block";
document.getElementById("img4").style.display="none";
document.getElementById("img5").style.display="none";
document.getElementById("img6").style.display="none";
document.getElementById("img7").style.display="none";
 }
}
function show4()                                                                                          {
        if(document.getElementById)
{
document.getElementById("img1").style.display="none";
document.getElementById("img2").style.display="none";
document.getElementById("img3").style.display="none";
document.getElementById("img4").style.display="block";
document.getElementById("img5").style.display="none"
document.getElementById("img6").style.display="none";
document.getElementById("img7").style.display="none";
 }
}

function show5()                                                                                          {
        if(document.getElementById)
{
document.getElementById("img1").style.display="none";
document.getElementById("img2").style.display="none";
document.getElementById("img3").style.display="none";
document.getElementById("img4").style.display="none";
document.getElementById("img5").style.display="block";
document.getElementById("img6").style.display="none";
document.getElementById("img7").style.display="none";
 }
}
function show6()                                                                                          {
        if(document.getElementById)
{
document.getElementById("img1").style.display="none";
document.getElementById("img2").style.display="none";
document.getElementById("img3").style.display="none";
document.getElementById("img4").style.display="none";
document.getElementById("img5").style.display="none";
document.getElementById("img6").style.display="block";
document.getElementById("img7").style.display="none";
 }
}
function show7()                                                                                          {
        if(document.getElementById)
{
document.getElementById("img1").style.display="none";
document.getElementById("img2").style.display="none";
document.getElementById("img3").style.display="none";
document.getElementById("img4").style.display="none";
document.getElementById("img5").style.display="none";
document.getElementById("img6").style.display="none";
document.getElementById("img7").style.display="block";
 }
}