To load adzone faster, we need to use ajax to load the province, city or county when it's parent changed.
Here is the major code:
1. Main page
2. Common javascript in tms.common.js
3. Data format
We use json to transfer the data, it's format must be:
3.1 Province
3.2 City (山西省)
3.3 County
4. Result
Province - City - County
Province: City: County: