function showOrHide1(value) {
var st = document.getElementById("hidden1").style;
if (value==0) st.visibility='hidden';
else if (value==1)
st.visibility='visible';
}
function showOrHide2(value) {
var st = document.getElementById("hidden2").style;
if (value==0) st.visibility='hidden';
else if (value==1)
st.visibility='visible';
}
function showOrHide3(value) {
var st = document.getElementById("hidden3").style;
if (value==0) st.visibility='hidden';
else if (value==1)
st.visibility='visible';
}
function showOrHide4(value) {
var st = document.getElementById("hidden4").style;
if (value==0) st.visibility='hidden';
else if (value==1)
st.visibility='visible';
}