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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This Source Code Form is "Incompatible With Secondary Licenses", as
* defined by the Mozilla Public License, v. 2.0. */
function getPreSelectedIndex(el) {
var options = el.options;
for (var i = 0, l = options.length; i < l; i++) {
var attributes = options[i].attributes;
for (var j = 0, m = attributes.length; j < m; j++) {
if (attributes[j].name == 'selected') {
return i;
}
}
}
return -1;
}
// Force the browser to honour the selected option when a page is refreshed,
// but if the user hasn't explicitly selected a different option.
YAHOO.util.Event.onDOMReady(function() {
var selects = document.getElementById('changeform').getElementsByTagName('select');
for (var i = 0, l = selects.length; i < l; i++) {
var el = selects[i];
var el_dirty = document.getElementById(el.name + '_dirty');
if (el_dirty) {
if (!el_dirty.value) {
var preSelectedIndex = getPreSelectedIndex(el);
if (preSelectedIndex != -1)
el.selectedIndex = preselectedIndex;
}
YAHOO.util.Event.on(el, "change", function(e) {
var el = e.target || e.srcElement;
var preSelectedIndex = getPreSelectedIndex(el);
if (preSelectedIndex != -1)
document.getElementById(el.name + '_dirty').value = preSelectedIndex == el.selectedIndex ? '' : '1';
});
}
}
});
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