<!--

// "Select All" JavaScript for Forms Posting to an Array
// http://www.ilovejackdaniels.com/blog/select-all-javascript-for-forms-posting-to-an-array/
// <form id="form_id" ...> needed


var formblock;
var forminputs;

function prepare() {
formblock= document.getElementById('form_id');
forminputs = formblock.getElementsByTagName('input');
}

function select_all(name, value) {
for (i = 0; i < forminputs.length; i++) {
// regex here to check name attribute
var regex = new RegExp(name, "i");
if (regex.test(forminputs[i].getAttribute('name'))) {
if (value == '1') {
forminputs[i].checked = true;
} else {
forminputs[i].checked = false;
}
}
}
}

if (window.addEventListener) {
window.addEventListener("load", prepare, false);
} else if (window.attachEvent) {
window.attachEvent("onload", prepare)
} else if (document.getElementById) {
window.onload = prepare;
}

//-->