// JScript File
function enableOtherCity()
{
       
       var otherCity = document.getElementById('drpCityList1').options[document.getElementById('drpCityList1').selectedIndex].value;       
       if( otherCity == "-1" )
       {                        
            document.form1.otherCityTb.disabled=false;
            return true;
       }
       else        
       {                        
            document.form1.otherCityTb.disabled=true;
            return false;
       }
       
}