formToData

function formToData(dom) {
    var _this=this,
		_i,
		data;
	if(dom){
		_this=dom;
	}
	fields = _this.querySelectorAll("input, textarea, select");
	for(_i=fields.length-1; i>=0; _i--){
		var _key = fields[_i].name||fields[_i].id;
		if (_key) {
			data[_key]=fields[_i].value;
		}
	}
	return data;
}