function changeMc(a,b,c,d,e,f,g,h,i){
document.getElementById(a).style.display = "block"
document.getElementById(b).style.display = "none"
document.getElementById(c).style.display = "none"
document.getElementById(d).style.display = "none"
document.getElementById(e).style.display = "none"
document.getElementById(f).style.display = "none"
document.getElementById(g).style.display = "none"
document.getElementById(h).style.display = "none"
document.getElementById(i).style.display = "none"
}

function changetd(k,n,tdname){
    //var td=
    for(i=1;i<=n;i++)
    {
        document.getElementById(tdname+i).style.display ="none"
    }    
    document.getElementById(tdname+k).style.display =  "block"
}