function tabIt(which) {
var b1 = document.getElementById('box1');
var b2 = document.getElementById('box2');
var b3 = document.getElementById('box3');
var t1 = document.getElementById('tableft');
var t2 = document.getElementById('tabright');
var t3 = document.getElementById('tabcenter');

if ( which == "1" ) {
b1.style.display = 'block';
b2.style.display = 'none';
b3.style.display = 'none';
t1.className =  "hi";
t2.className =  "";
t3.className =  "";
}
if (which == "2") {
b1.style.display = 'none';
b2.style.display = 'block';
b3.style.display = 'none';
t1.className =  "";
t2.className =  "";
t3.className =  "hi";
}
if (which == "3") {
b1.style.display = 'none';
b2.style.display = 'none';
b3.style.display = 'block';
t1.className =  "";
t2.className =  "hi";
t3.className =  "";
}
}
function tabTwo(which) {
var b1 = document.getElementById('box1');
var b2 = document.getElementById('box2');
var t1 = document.getElementById('tableft');
var t2 = document.getElementById('tabright');

if ( which == "1" ) {
b1.style.display = 'block';
b2.style.display = 'none';
t1.className =  "hi";
t2.className =  "";
}
if (which == "2") {
b1.style.display = 'none';
b2.style.display = 'block';
t1.className =  "";
t2.className =  "hi";
}

}
function tabFour(which) {
var b1 = document.getElementById('box1');
var b2 = document.getElementById('box2');
var b3 = document.getElementById('box3');
var b4 = document.getElementById('box4');
var t1 = document.getElementById('tableft');
var t2 = document.getElementById('tableftcenter');
var t3 = document.getElementById('tabrightcenter');
var t4 = document.getElementById('tabright');
if ( which == "1" ) {
b1.style.display = 'block';
b2.style.display = 'none';
b3.style.display = 'none';
b4.style.display = 'none';
t1.className =  "hi";
t2.className =  "";
t3.className =  "";
t4.className =  "";
}
if (which == "2") {
b1.style.display = 'none';
b2.style.display = 'block';
b3.style.display = 'none';
b4.style.display = 'none';
t1.className =  "";
t2.className =  "hi";
t3.className =  "";
t4.className =  "";
}
if (which == "3") {
b1.style.display = 'none';
b2.style.display = 'none';
b3.style.display = 'block';
b4.style.display = 'none';
t1.className =  "";
t2.className =  "";
t3.className =  "hi";
t4.className =  "";
}
if (which == "4") {
b1.style.display = 'none';
b2.style.display = 'none';
b3.style.display = 'none';
b4.style.display = 'block';
t1.className =  "";
t2.className =  "";
t3.className =  "";
t4.className =  "hi";
}
}