var a1=1;
var b1=1;
var c1=1;
var d1=1;
function o1() {
if (a1=1) {
document.getElementById("mopt").innerHTML= "<h4>More wall mount options:</h4><input type='checkbox' name='r1' value='1'>Fixed wall mount<br><input type='checkbox' name='r1' value='e'>19' Wall track slider<br><input type='checkbox' name='r1' value='f'>36' Wall track slider";
var a1=0;
}
if (a1=0){
document.getElementById("mopt").innerHTML= "";
var a1=1;
}
}
function o2() {
if (b1=1) {
document.getElementById("mopt2").innerHTML= "<h4>More desk mount options:</h4><input type='checkbox' name='r1' value='2'>Desk mount with 1' riser<br><input type='checkbox' name='r1' value='3'>Desk mount with 3' riser<br><input type='checkbox' name='r1' value='4'>Desk mount with 5' riser<br><input type='checkbox' name='r1' value='5'>Desk mount with 7.5' riser";
var b1=0;
}else {
document.getElementById("mopt2").innerHTML= "";
var b1=1;
}
}
function o3() {
if (c1=1) {
document.getElementById("mopt3").innerHTML= "<h4>More pole mount options:</h4><input type='checkbox' name='r1' value='6'>Mount to a 2' pole <br><input type='checkbox' name='r1' value='7'>Mount to a 1.75' pole<br><input type='checkbox' name='r1' value='8'>Mount to a 1.5' pole";
var c1=0;
}else {
document.getElementById("mopt3").innerHTML= "";
var c1=1;
}
}
function o4() {
if (d1=1) {
document.getElementById("mopt4").innerHTML= "<h4>More ceiling mount options:</h4><input type='checkbox' name='r1' value='a'>Ceiling mount with 5' pipe ext.<br><input type='checkbox' name='r1' value='b'>Ceiling mount with 12' pipe ext.<br><input type='checkbox' name='r1' value='c'>Ceiling mount with 24' pipe ext.<br><input type='checkbox' name='r1' value='d'>Ceiling mount with 36' pipe ext.";
var d1=0;
}else {
document.getElementById("mopt4").innerHTML= "";
var d1=1;
}
}