function formIsDirty(form) {?

for (var i = 0; i < form.elements.length; i++) {?

var element = form.elements[i];?

var type = element.type;?

if (type == "checkbox" || type == "radio") {?

if (element.checked != element.defaultChecked) {?

return true;?

}?

}?

else if (type == "hidden" || type == "password" || type == "text" || type == "textarea") {?

if (element.value != element.defaultValue) {?

return true;?

}?

}?

else if (type == "select-one" || type == "select-multiple") {?

for (var j = 0; j < element.options.length; j++) {?

if (element.options[j].selected != element.options[j].defaultSelected) {?

return true;?

}?