Your question is really not perl related, however, here is some javascript which implements what you seem to ask for.

I've tested in Konqueror, Firefox and IE.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http:/
+/www.w3.org/TR/html4/loose.dtd">
<html>

<head>
  <title></title>
  <meta name="GENERATOR" content="VIM">
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  
<script language="JavaScript">
var twofastest;
var checkboxes=[];

function initVars(){
    if ( twofastest )
        return;
    
    twofastest = document.getElementById('twofastest');
    
    var cb = document.getElementsByName('progname');
    var b = 0;
    for (var a=0; a<cb.length; a++ ){
        if ( cb[a] != twofastest ){
            checkboxes[b] = cb[a];
            b++;
        }
    }
            
}

function checkBoxClick(){
    initVars();    
    var anyboxchecked = false;
    for (var a=0; a<checkboxes.length; a++ ){
        if ( checkboxes[a].checked )
            anyboxchecked = true;
    }
    
    twofastest.disabled = anyboxchecked;
}


function twofastestClick(){
    initVars();
    for (var a=0; a<checkboxes.length; a++ ){
            if ( twofastest.checked )
                checkboxes[a].checked = false;
            checkboxes[a].disabled = twofastest.checked;
    } 
}

</script>
</head>
<body>


<form action="">

    <input type="checkbox" name="progname" value="2fastest" id="twofas
+test" 
        onClick="twofastestClick()">2 Fastest<br/>
    <input type="checkbox" name="progname" value="mitra" 
        onClick="checkBoxClick()" />Mitra <br/>
    <input type="checkbox" name="progname" value="space" 
        onClick="checkBoxClick()" />Space <br/>
    <input type="checkbox" name="progname" value="meme" 
        onClick="checkBoxClick()" />Meme <br/>
</form>


</body>
</html>

[download]
Michael

In reply to Re: Checking and Unchecking Checkboxes in CGI.pm by misc
in thread Checking and Unchecking Checkboxes in CGI.pm by monkfan

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