How to disable the value 4 andvalue 5 from second listbox when only C is selected from the 1st list box. Now second list is disabled. I have to enable the list box but only values of 2nd list box should be disabled when C is selected.
<html>
<head>
<script type="text/javascript">
function checkSelect1(selVal) {
alert(selVal);
sel2 = document.getElementById("select2");
if (selVal=="C" || selVal=="value5") {
sel2.disabled = false;
} else {
sel2.disabled = true;
}
}
</script>
</head>
<body>
<select name="select1" onchange="checkSelect1(this.value);">
<option value="R">1</option>
<option value="Q">2</option>
<option value="S">3</option>
<option value="C">4</option>
<option value="--">5</option>
</select>
<select name="select2" disabled>
<option value="value1">1</option>
<option value="value2">2</option>
<option value="value3">3</option>
<option value="value4">4</option>
<option value="value5">5</option>
</select>
</body>
</html>
