function ddlNature_Change(ddlNature) {
    var parentID = ddlNature.id.substr(0, ddlNature.id.lastIndexOf('_'));
    var pCorporel = document.getElementById(parentID + '_pCorporel');
    pCorporel.style.display = (ddlNature.value == 'CORP') ? 'block' : 'none';
    
    pResponsabilite = document.getElementById(parentID + '_pResponsabilite');
    pPresenceTiers = document.getElementById(parentID + '_pPresenceTiers');
    pConducteurSinistre = document.getElementById(parentID + '_pConducteurSinistre');

    if ((ddlNature.value == 'BDG') || (ddlNature.value == 'INC') || (ddlNature.value == 'VOL') || (ddlNature.value == 'CAN') || (ddlNature.value == 'VAND')) {
        pResponsabilite.style.display = 'none';
        pPresenceTiers.style.display = 'none';
        pConducteurSinistre.style.display = 'none';
    }
    else if ((ddlNature.value == 'CORP') || (ddlNature.value == 'ACC')) {
        pResponsabilite.style.display = 'block';
        pPresenceTiers.style.display = 'block';
        pConducteurSinistre.style.display = 'none';
    }
    else if (ddlNature.value == 'STA') {
        pResponsabilite.style.display = 'none';
        pPresenceTiers.style.display = 'block';
        pConducteurSinistre.style.display = 'none';
    }
    else {
        pResponsabilite.style.display = 'none';
        pPresenceTiers.style.display = 'none';
        pConducteurSinistre.style.display = 'none';
    }
}