greencard,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<script>
window.onload = function () {
var ck = document.querySelectorAll('[name="ck[]"]');
document.onclick = function (a) {
a = a.target || window.event.srcElement;
if(a.name == "ck[]") {
for (var i=0; i<ck.length; i++) {
ck[i].disabled = ck[i] != a ? a.checked : false
}
}
}
}
</script>
</head>
<body>
<input type="checkbox" name="ck[]" class="test" value="1" >1
<input type="checkbox" name="ck[]" class="tovary" value="2" >2
<input type="checkbox" name="ck[]" class="test" value="3">3
<input type="checkbox" name="ck[]" class="tovary" value="3" >3
</body>
</html>