Try this. Remember that JavaScript starts with 0 and not 1. The form fields are counted in the order they display on the page.
[code:1:2257904064]<html>
<head>
<title>Test Page</title>
<script type="text/javascript">
//<![CDATA[
function disable_all() {
//enter all form fields needed to be disabled
document.forms[0][1].disabled = true;
document.forms[0][3].disabled = true;
}
function toggle(x,y){
if (document.forms[0][x].value == 0) {
document.forms[0][y].disabled = true;
} else {
document.forms[0][y].disabled = false;
}
}
//]]>
</script>
</head>
<body onload="disable_all();">
<form >
<p><input type="text" name="testbox" id="2" size="20" onKeyDown="toggle(0,1);" ><input type="checkbox" name="checkboxtest" id="1" value="ON"></p>
<p><input type="text" name="testbox" id="2" size="20" value="" onKeyDown="toggle(2,3);"><input type="checkbox" name="checkboxtest" id="1" value="ON"></p>
<input type="text">
<input type="submit" name="submit">
</form>
</body>
</html> [/code:1:2257904064]
imaginemn