<script language="JavaScript" type="text/JavaScript">

function CheckAll(form) {
 for (var i=0;i<form.elements.length;i++) {
 var e = form.elements[i];
 if (e.name != 'chkall') e.checked = form.chkall.checked;
 }
 }
</script>

<form name=Prodlist action=prod1.asp method=post>

</form>