function showOpseg()
{
    var vrsta_vozila = document.getElementById("vrsta_vozila");
    var x = document.getElementById("putnicko_div");
    var y = document.getElementById("motor_div");
    var k = document.getElementById("teretno_div");
 var f = document.getElementById("input");

  if (vrsta_vozila.value == "p") {
        x.style.visibility = 'visible';
        x.style.display = 'block';

        y.style.visibility = 'hidden';
        y.style.display = 'none';

        k.style.visibility = 'hidden';
        k.style.display = 'none';

    }

    if (vrsta_vozila.value == "m") {
        y.style.visibility = 'visible';
        y.style.display = 'block';

        x.style.visibility = 'hidden';
        x.style.display = 'none';

        k.style.visibility = 'hidden';
        k.style.display = 'none';

    }

    if (vrsta_vozila.value == "t") {
        k.style.visibility = 'visible';
        k.style.display = 'block';

        y.style.visibility = 'hidden';
        y.style.display = 'none';

        x.style.visibility = 'hidden';
        x.style.display = 'none';

    }
     
        f.style.visibility = 'visible';
        f.style.display = 'block';

}

var xmlhttp;

function showUser()
{
    xmlhttp=GetXmlHttpObject();
    if (xmlhttp==null)
    {
        alert ("Browser does not support HTTP Request");
        return;
    }

    var kol = document.getElementById("kol");
    var vrsta_vozila = document.getElementById("vrsta_vozila");


       
    var url="getuser.php";
    url=url+"?kol="+kol.value;
    url=url+"&vrsta_vozila="+vrsta_vozila.value;
    xmlhttp.onreadystatechange=stateChanged;
    xmlhttp.open("GET",url,true);
    xmlhttp.send(null);
}

function stateChanged()
{
    if (xmlhttp.readyState==4)
    {
        document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
    }
}

function GetXmlHttpObject()
{
    if (window.XMLHttpRequest)
    {
        // code for IE7+, Firefox, Chrome, Opera, Safari
        return new XMLHttpRequest();
    }
    if (window.ActiveXObject)
    {
        // code for IE6, IE5
        return new ActiveXObject("Microsoft.XMLHTTP");
    }
    return null;
}