Javascript serializeObject function

$.fn.serializeObject = function()
{
 var o = {};
 var a = this.serializeArray();
 $.each(a, function() {
 if (o[this.name] !== undefined) {
 if (!o[this.name].push) {
 o[this.name] = [o[this.name]];
 }
 o[this.name].push(this.value || '');
 } else {
 o[this.name] = this.value || '';
 }
 });
 return o;
};