I have sort of a problem, i want to check all the check boxes on a page but with a POST array. So for example the name of the check box would be:

name="files[]"

So i would want this to work with an array using this simple code:

<!-- Begin
function checkAll(field)
{
for (i = 0; i < field.length; i++)
	field[i].checked = true ;
}

function uncheckAll(field)
{
for (i = 0; i < field.length; i++)
	field[i].checked = false ;
}
//  End -->

You can check a checkbox by updating its "checked" attribute.

Not sure what you mean by the POST array. As far as I'm aware, POST data is only sent to the server.

<script>
function checkAll(formId) {
var inputs = document.getElementById(formId).getElementsByTagName("input");
for (var i = 0; i < inputs.length; i++) {
     if (inputs[i].getAttribute("type") == "checkbox") {
          inputs[i].checked = true;
     }
}
}
function uncheckAll(formId) {
var inputs = document.getElementById(formId).getElementsByTagName("input");
for (var i = 0; i < inputs.length; i++) {
     if (inputs[i].getAttribute("type") == "checkbox") {
          inputs[i].checked = false;
     }
}
}
</script>

You'll need an id="whatever" attribute on the form in question, then pass this to the function.