// constants
var noValue = '-99'

// globals
about='0~Affitto|1~Vendita|2~Case vacanza|3~B&B|4~Locati|';
tipo='0~Appartamenti|1~Bassi commerciali ed uso uff.|2~Ville e terreni|';
dove='0~Ortigia|1~Zona alta|';
var curOption = new Array();
var isLoaded = new Array();
var prima= new Array (4);
prima[0]="affitto";
prima[1]="vendita"
prima[2]="case_vacanza"
prima[3]="bed_and_breakfast"
prima[4]="locato"


function canc(){
document.forms['QForm']['formprezzo'].value="€";
}


function body_onLoad(){

  // initialize lists
  //emptyList( 'lstMake' );
  //emptyList( 'lstModel');
  //emptyList( 'lstOptions' );



  //jsrsExecute( 'select_rs.asp', cbFillMake, 'makeList' );
document.forms['QForm']['lstModel'].options[0] = new Option('- TIPO -', noValue);
document.forms['QForm']['lstOptions'].options[0] = new Option('- DOVE -', noValue);
cbFillMake(about);
}

function lstMake_onChange(){
  var val = this.options[this.selectedIndex].value;

document.forms['QForm']['tabella'].value=prima[val];
  if(val == noValue){
    // don't allow novalue selection - revert to current
    selectOption( this.name, curOption[this.name] )
  } else {
    curOption[this.name] = val;
    // init dependent lists
    emptyList( 'lstModel' );
    //------emptyList( 'lstOptions');
    window.status = 'Loading Model Selections...';

    //jsrsExecute( 'select_rs.asp', cbFillModel, 'modelList', val );
if (val<2){
cbFillModel(tipo);}
else{
cbFillModel('');}
  }  
}

function lstModel_onChange(){
  var val = this.options[this.selectedIndex].value;

  if(val == noValue){
    selectOption( this.name, curOption[this.name] )
  } else {
    curOption[this.name] = val;
    emptyList( 'lstOptions');
    window.status = 'Loading Options Selections...';
    //jsrsExecute( 'select_rs.asp', cbFillOptions, 'optionsList', val );

if (val<2){
cbFillOptions(dove);}
else{
cbFillOptions('');}
  }  
}

function lstOptions_onChange(){
  var val = this.options[this.selectedIndex].value;

  if(val == noValue){
    selectOption( this.name, curOption[this.name] )
  } else {
    var msg = "You have selected: \n\n";
    msg += this.form.lstMake.options[this.form.lstMake.selectedIndex].value + "\n";
    msg += this.form.lstModel.options[this.form.lstModel.selectedIndex].value + "\n";
    msg += this.options[this.selectedIndex].value + "\n";
    //alert (msg);
  }
}

function cbFillMake ( strMakes ){ 

  window.status = '';
  fillList( 'lstMake',  strMakes ); 
}

function cbFillModel ( strModels ){ 
  // callback for dependent listbox
  window.status = '';
  fillList( 'lstModel',  strModels ); 
}

function cbFillOptions( strOptions ){ 
  // callback for dependent listbox
  window.status = '';
  fillList( 'lstOptions', strOptions ); 
}

function fillList( listName, strOptions ){

  // fill any list with options
  //-----emptyList( listName );
  
  // always insert selection prompt
  var lst = document.forms['QForm'][listName];
  lst.disabled = true;

  
  // options in form "value~displaytext|value~displaytext|..."
  var aOptionPairs = strOptions.split('|');
  for( var i = 0; i < aOptionPairs.length; i++ ){
    if (aOptionPairs[i].indexOf('~') != -1) {
      var aOptions = aOptionPairs[i].split('~');
      lst.options[i + 1] = new Option(aOptions[1], aOptions[0]);
    }  
  }

 if (listName=='lstMake'){
  lst.options[0] = new Option('- CERCA IN -', noValue);}
else if (listName=='lstModel'){
if (strOptions!='') {
lst.options[0] = new Option('- TIPO -', noValue);
emptyList( 'lstOptions');
document.forms['QForm']['lstOptions'].options[0] = new Option('- DOVE -', noValue);}
else{
lst.options[0] = new Option('--------', noValue);
emptyList( 'lstOptions');
document.forms['QForm']['lstOptions'].options[0] = new Option('-------', noValue);}
                                     }
                                     
else if (listName=='lstOptions' &&  strOptions!=''){
lst.options[0] = new Option('- DOVE -', noValue);}
else{document.forms['QForm']['lstOptions'].options[0] = new Option('-------', noValue);}

 
  // init to no value
  selectOption( listName, noValue );
  lst.onchange = eval( listName + "_onChange" );
  isLoaded[listName] = true;
  lst.disabled = false;
}

function emptyList( listName ){
  var lst = document.forms['QForm'][listName];
  lst.options.length = 0;
  lst.onchange = null;
  isLoaded[listName] = false;
  curOption[listName] = noValue;

}

function selectOption( listName, optionVal ){
  // set list selection to option based on value
  var lst = document.forms['QForm'][listName];
  for( var i = 0; i< lst.options.length; i++ ){
    if( lst.options[i].value == optionVal ){
      lst.selectedIndex = i;
      curOption[listName] = optionVal;
      return;
    }  
  }
}