function showspan(classid) {
document.getElementById(classid).style.display="block";
}

function hidespan(classid) {
document.getElementById(classid).style.display="none";
}

function showarrow(num) {
document.getElementById("ssarrow"+num).style.display="block";
}

function hidearrow(num) {
document.getElementById("ssarrow"+num).style.display="none";
}

function showBarrow(num) {
document.getElementById("ssBarrow"+num).style.display="block";
}

function hideBarrow(num) {
document.getElementById("ssBarrow"+num).style.display="none";
}

function showCarrow(num) {
document.getElementById("ssCarrow"+num).style.display="block";
}

function hideCarrow(num) {
document.getElementById("ssCarrow"+num).style.display="none";
}

function showDarrow(num) {
document.getElementById("ssDarrow"+num).style.display="block";
}

function hideDarrow(num) {
document.getElementById("ssDarrow"+num).style.display="none";
}

function showEarrow(num) {
document.getElementById("ssEarrow"+num).style.display="block";
}

function hideEarrow(num) {
document.getElementById("ssEarrow"+num).style.display="none";
}