function kkk(a){
if ( a== 1){document.getElementById(a).src="mygt/amust.gif"}
if ( a== 2){document.getElementById(a).src="mygt/darbt.gif"}
if ( a== 3){document.getElementById(a).src="mygt/akct.gif"}
if ( a== 4){document.getElementById(a).src="mygt/kont.gif"}
}
function kk(b){
if ( b== 1){document.getElementById(b).src="mygt/amusn.gif"}
if ( b== 2){document.getElementById(b).src="mygt/darbn.gif"}
if ( b== 3){document.getElementById(b).src="mygt/akcn.gif"}
if ( b== 4){document.getElementById(b).src="mygt/konn.gif"}
}

function on() {
document.getElementById('1').style.visibility='visible'
document.getElementById('2').style.visibility='visible'
document.getElementById('3').style.visibility='visible'
document.getElementById('4').style.visibility='visible'
document.getElementById('basic').style.visibility='visible'
document.getElementById('pav').style.visibility='visible'
document.getElementById('kr').style.visibility='hidden'
}