function calculTVA ()
{
    var select = document.getElementById("country");
    var price = document.getElementById("price");
    var devise =document.getElementById("devise");
    var tva = document.getElementById("TVAinfo");
    var tva_hidden = document.getElementById("tva_hidden");
    
    if(select.options[select.selectedIndex].value == 78)
    {
       var priceValue = parseInt(price.innerHTML);
        var resultat = ((priceValue * 19.6)/100) + priceValue;
        
        resultat = resultat.toFixed(2);
        
        tva.innerHTML= priceValue + " + TVA 19,6% = " + resultat + devise.innerHTML;
        
        tva_hidden.value = tva.innerHTML ;
    } 
    else
    {
	    tva.innerHTML="";
        tva_hidden.value = tva.innerHTML ;
    }
}

function selectCountry()
{

    var select = document.getElementById("country");
    var country = document.getElementById("country_hidden");
    
    country.value = select.options[select.selectedIndex].value;
    
}