Лови:
| Код |
<body>
<script type="text/javascript">
var maxReader = 15;
var maxWriter = 15;
function checkState(chcb) {
var form = document.forms["oForm"];
var readerCont = 0;
var writerCont = 0;
for(i = 0; i < form.elements.length; i++) {
if (form.elements[i].type == "checkbox" && form.elements[i].name.indexOf("reader") != -1 && form.elements[i].checked) {
readerCont++;
} else if (form.elements[i].type == "checkbox" && form.elements[i].name.indexOf("writer") != -1 && form.elements[i].checked) {
writerCont++;
}
}
if (readerCont < maxReader) disableCheckGroup("reader", false);
else disableCheckGroup("reader", true);
if (writerCont < maxWriter) disableCheckGroup("writer", false);
else disableCheckGroup("writer", true);
}
function disableCheckGroup(namePart, flag) {
var form = document.forms["oForm"];
for(i = 0; i < form.elements.length; i++) {
if (form.elements[i].type == "checkbox" && form.elements[i].name.indexOf(namePart) != -1 && !form.elements[i].checked) {
form.elements[i].disabled = flag;
}
}
}
</script>
<form name="oForm">
<table border="1"><tr>
<td>
<input type="checkbox" name="reader|1" onclick="checkState()"><br>
<input type="checkbox" name="reader|2" onclick="checkState()"><br>
<input type="checkbox" name="reader|3" onclick="checkState()"><br>
<input type="checkbox" name="reader|4" onclick="checkState()"><br>
<input type="checkbox" name="reader|5" onclick="checkState()"><br>
<input type="checkbox" name="reader|6" onclick="checkState()"><br>
<input type="checkbox" name="reader|7" onclick="checkState()"><br>
<input type="checkbox" name="reader|8" onclick="checkState()"><br>
<input type="checkbox" name="reader|9" onclick="checkState()"><br>
<input type="checkbox" name="reader|10" onclick="checkState()"><br>
<input type="checkbox" name="reader|11" onclick="checkState()"><br>
<input type="checkbox" name="reader|12" onclick="checkState()"><br>
<input type="checkbox" name="reader|13" onclick="checkState()"><br>
<input type="checkbox" name="reader|14" onclick="checkState()"><br>
<input type="checkbox" name="reader|15" onclick="checkState()"><br>
<input type="checkbox" name="reader|16" onclick="checkState()"><br>
<input type="checkbox" name="reader|17" onclick="checkState()"><br>
<input type="checkbox" name="reader|18" onclick="checkState()"><br>
<input type="checkbox" name="reader|19" onclick="checkState()"><br>
<input type="checkbox" name="reader|20" onclick="checkState()"><br>
<input type="checkbox" name="reader|21" onclick="checkState()"><br>
<input type="checkbox" name="reader|22" onclick="checkState()"><br>
<input type="checkbox" name="reader|23" onclick="checkState()"><br>
<input type="checkbox" name="reader|24" onclick="checkState()"><br>
<input type="checkbox" name="reader|25" onclick="checkState()"><br>
</td><td>
<input type="checkbox" name="writer|1" onclick="checkState()"><br>
<input type="checkbox" name="writer|2" onclick="checkState()"><br>
<input type="checkbox" name="writer|3" onclick="checkState()"><br>
<input type="checkbox" name="writer|4" onclick="checkState()"><br>
<input type="checkbox" name="writer|5" onclick="checkState()"><br>
<input type="checkbox" name="writer|6" onclick="checkState()"><br>
<input type="checkbox" name="writer|7" onclick="checkState()"><br>
<input type="checkbox" name="writer|8" onclick="checkState()"><br>
<input type="checkbox" name="writer|9" onclick="checkState()"><br>
<input type="checkbox" name="writer|10" onclick="checkState()"><br>
<input type="checkbox" name="writer|11" onclick="checkState()"><br>
<input type="checkbox" name="writer|12" onclick="checkState()"><br>
<input type="checkbox" name="writer|13" onclick="checkState()"><br>
<input type="checkbox" name="writer|14" onclick="checkState()"><br>
<input type="checkbox" name="writer|15" onclick="checkState()"><br>
<input type="checkbox" name="writer|16" onclick="checkState()"><br>
<input type="checkbox" name="writer|17" onclick="checkState()"><br>
<input type="checkbox" name="writer|18" onclick="checkState()"><br>
<input type="checkbox" name="writer|19" onclick="checkState()"><br>
<input type="checkbox" name="writer|20" onclick="checkState()"><br>
<input type="checkbox" name="writer|21" onclick="checkState()"><br>
<input type="checkbox" name="writer|22" onclick="checkState()"><br>
<input type="checkbox" name="writer|23" onclick="checkState()"><br>
<input type="checkbox" name="writer|24" onclick="checkState()"><br>
<input type="checkbox" name="writer|25" onclick="checkState()"><br>
</td>
</tr></table>
</form>
</body>
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