Código PHP:
<form name="frm">
Option 1: <input type="radio" name="r1" /><br />
Option 2: <input type="radio" name="r2" /><br />
Option 3: <input type="radio" name="r3" /><br />
Option 4: <input type="radio" name="r4" /><br />
Option 5: <input type="radio" name="r5" /><br /><br />
<input type="checkbox" name="c1" disabled /> <input type="checkbox" name="c2" disabled /> <input type="checkbox" name="c3" disabled /> <input type="checkbox" name="c4" disabled /> <input type="checkbox" name="c5" disabled />
</form>
<script>
document.frm.r1.onclick = function(){
document.frm.c1.disabled = false;
document.frm.c2.disabled = false;
document.frm.c5.disabled = false;
document.frm.c3.disabled = true;
document.frm.c4.disabled = true;
}
document.frm.r2.onclick = function(){
document.frm.c3.disabled = false;
document.frm.c1.disabled = true;
document.frm.c2.disabled = true;
document.frm.c4.disabled = true;
document.frm.c5.disabled = true;
}
document.frm.r3.onclick = function(){
document.frm.c1.disabled = false;
document.frm.c4.disabled = false;
document.frm.c5.disabled = false;
document.frm.c2.disabled = true;
document.frm.c3.disabled = true;
}
document.frm.r4.onclick = function(){
document.frm.c2.disabled = false;
document.frm.c5.disabled = false;
document.frm.c1.disabled = true;
document.frm.c3.disabled = true;
document.frm.c4.disabled = true;
}
document.frm.r5.onclick = function(){
document.frm.c1.disabled = false;
document.frm.c3.disabled = false;
document.frm.c2.disabled = true;
document.frm.c4.disabled = true;
document.frm.c5.disabled = true;
}
</script>