function show1()
{

document.getElementById('caidan1').style.display="";
document.getElementById('caidan2').style.display="none";
document.getElementById('caidan3').style.display="none";
document.getElementById('caidan4').style.display="none";
document.getElementById('caidan5').style.display="none";

}
function cang1()
{

document.getElementById('caidan1').style.display="none";

}
function show2()
{

document.getElementById('caidan1').style.display="none";
document.getElementById('caidan2').style.display="";
document.getElementById('caidan3').style.display="none";
document.getElementById('caidan4').style.display="none";
document.getElementById('caidan5').style.display="none";

}
function cang2()
{

document.getElementById('caidan2').style.display="none";

}
function show3()
{

document.getElementById('caidan1').style.display="none";
document.getElementById('caidan2').style.display="none";
document.getElementById('caidan3').style.display="";
document.getElementById('caidan4').style.display="none";
document.getElementById('caidan5').style.display="none";

}
function cang3()
{

document.getElementById('caidan3').style.display="none";

}
function show4()
{

document.getElementById('caidan1').style.display="none";
document.getElementById('caidan2').style.display="none";
document.getElementById('caidan3').style.display="none";
document.getElementById('caidan4').style.display="";
document.getElementById('caidan5').style.display="none";

}
function cang4()
{

document.getElementById('caidan4').style.display="none";

}
function show5()
{

document.getElementById('caidan1').style.display="none";
document.getElementById('caidan2').style.display="none";
document.getElementById('caidan3').style.display="none";
document.getElementById('caidan4').style.display="none";
document.getElementById('caidan5').style.display="";

}
function cang5()
{

document.getElementById('caidan5').style.display="none";

}