function getForm(formName) {
    // Test if is IE or Netscape (document.layers)
    if(document.all)
        return eval(formName);
    else
        return document.forms[formName];
}

function ValidaPesq () {
    var searchForm = getForm("imoFastSearch");

    if(searchForm.tipologia_id1.selectedIndex > searchForm.tipologia_id2.selectedIndex) {
        alert("Seleccionar tipologia mแxima igual ou superior\nเ tipologia mํnima.");
        searchForm.tipologia_id2.focus();
        return false;
    }

    if(searchForm.concelho_id.selectedIndex == 0) {
        alert("Por favor, escolha o Concelho onde pretende fazer a sua pesquisa.");
        searchForm.concelho_id.focus();
        return false;
    }
    return true;
}


function populateSelect1(updateSelect, arrVal, arrTxt) {
    for(var i = updateSelect.options.length; i >= 0; i--)
        updateSelect.options[i] = null;

    var optElem = document.createElement("option");
    optElem.value = -1;
    optElem.text = ":: Pre็o Mแximo";
    updateSelect.options[0] = optElem;

    if(arrTxt != null && arrVal != null) {
        for(var i = 0; i < arrTxt.length; i++) {
            var optElem = document.createElement("option");
            optElem.value = arrVal[i];
            optElem.text = arrTxt[i];
            updateSelect.options[i + 1] = optElem;
        }
    }
}



function OnChangeOper() {
    var searchForm = getForm("imoFastSearch");
    var valor = parseInt(searchForm.operacao.value);
    var precoTxt = new Array("250 €","500 €","750 €","1.000 €","1.250 €","1.500 €","1.750 €",">2.000 €");
    var precoVal = new Array("250","500","750","100","1250","1500","1750","2000");
    var precoVendTxt = new Array("25.000 €","50.000 €","75.000 €","100.000 €","125.000 €","150.000 €","175.000 €","200.000 €","225.000 €","250.000 €","275.000 €","300.000 €","325.000 €","350.000 €","375.000 €","400.000 €",">425.000 €");
    var precoVendVal = new Array("25000","50000","75000","100000","125000","150000","175000","200000","225000","250000","275000","300000","325000","350000","375000","400000","425000");
    switch (valor){
        case 0:
            populateSelect1(document.getElementsByName("preco2")[0], new Array(), new Array());
            searchForm.preco2.disabled = true;
            break;
        case 1:     //Compra
            populateSelect1(document.getElementsByName("preco2")[0], precoVendVal, precoVendTxt);
            searchForm.preco2.disabled = false;
            break;
        case 2:     //Arredamento
            searchForm.preco2.disabled = true;
            break;
       case 3:     //Trespasse
            populateSelect1(document.getElementsByName("preco2")[0], precoVendVal, precoVendTxt);
            searchForm.preco2.disabled = false;
            break;
    }

}


function OnChangeTipo() {
    var searchForm = getForm("imoFastSearch");	
    if(searchForm.tipo_id.selectedIndex > 1) {
        searchForm.tipologia_id1.disabled = true;
        searchForm.tipologia_id2.disabled = true;
    }
    else {
        searchForm.tipologia_id1.disabled = false;
        searchForm.tipologia_id2.disabled = false;
    }	
}

function OnChangeTipoHPImo() {
    var searchForm = getForm("imoFastSearch");	
    if(searchForm.tipo_id.selectedIndex > 1) {
        searchForm.tipologia_id1.disabled = true;
        searchForm.tipologia_id2.disabled = true;
    }
    else {
        searchForm.tipologia_id1.disabled = false;
        searchForm.tipologia_id2.disabled = false;
    }	
}