function AddDistrict(NewDistrict){
// remove existing list
   for (var i= objSelect.length; i > 0 ; i--){
       objSelect.remove(i);
    }
    for (var i=0; i < NewDistrict.length;i++) {
             objSelect.options.add(document.createElement('OPTION'));
           objSelect.options[i+1].text = NewDistrict[i];
         objSelect.options[i+1].value = NewDistrict[i];
    }
}
function AllDistrict() {
var AD = new Array();
AD[0] = 'Aberdeen';
AD[1] = 'Causeway Bay';
AD[2] = 'Central';
AD[3] = 'Chai Wan';
AD[4] = 'Cheung Sha Wan';
AD[5] = 'Diamond Hill';
AD[6] = 'Fan Ling';
AD[7] = 'Happy Valley';
AD[8] = 'Ho Man Tin';
AD[9] = 'Hunghom';
AD[10] = 'Islands';
AD[11] = 'Kennedy Town';
AD[12] = 'Kowloon Bay';
AD[13] = 'Kowloon City';
AD[14] = 'Kowloon Tong';
AD[15] = 'Kwai Chung';
AD[16] = 'Kwun Tong';
AD[17] = 'Lai Chi Kok';
AD[18] = 'Lam Tin';
AD[19] = 'Ma On Shan';
AD[20] = 'Mid-Levels';
AD[21] = 'Mid-Levels Central';
AD[22] = 'Mid-Levels East';
AD[23] = 'Mid-Levels West';
AD[24] = 'Mong Kok';
AD[25] = 'Ngau Chi Wan';
AD[26] = 'Ngau Tau Kok';
AD[27] = 'North Point';
AD[28] = 'North Point Hill';
AD[29] = 'Peak';
AD[30] = 'Pokfulam';
AD[31] = 'Quarry Bay';
AD[32] = 'Repulse Bay';
AD[33] = 'Sai Kung';
AD[34] = 'Sai Ying Pun';
AD[35] = 'San Po Kong';
AD[36] = 'Sham Shui Po';
AD[37] = 'Shatin';
AD[38] = 'Shau Kei Wan';
AD[39] = 'Shek Kip Mei';
AD[40] = 'Sheung Shui';
AD[41] = 'Sheung Wan';
AD[42] = 'Shouson Hill';
AD[43] = 'Siu Sai Wan';
AD[44] = 'Stanley';
AD[45] = 'Tai Kok Tsui';
AD[46] = 'Tai Po';
AD[47] = 'Tai Tam';
AD[48] = 'To Kwa Wan';
AD[49] = 'Tseung Kwan O';
AD[50] = 'Tsim Sha Tsui';
AD[51] = 'Tsing Yi';
AD[52] = 'Tsuen Wan';
AD[53] = 'Tuen Mun';
AD[54] = 'Tung Chung';
AD[55] = 'Wan Chai';
AD[56] = 'Wang Tau Hom';
AD[57] = 'Western (HK)';
AD[58] = 'Wong Chuk Hang';
AD[59] = 'Wong Tai Sin';
AD[60] = 'Yau Ma Tei';
AD[61] = 'Yau Tong';
AD[62] = 'Yau Yat Chuen';
AD[63] = 'Yuen Long';

AddDistrict(AD)
AD = null;
}