var xmlhttp = null;
function regija(str) {
    if (str.length == 0) {
        document.getElementById('vzivo').innerHTML = 'NE DOBI VREDNOSTI!';
        return;
    }
    if (window.XMLHttpRequest) {
        // code for IE7+, Firefox, Chrome, Opera, Safari
        xmlhttp = new XMLHttpRequest();
    }
    else if (window.ActiveXObject) {
        // code for IE6, IE5
        xmlhttp = new ActiveXObject('Microsoft.XMLHTTP');
    }
    else {
        alert('Your browser does not support XMLHTTP!');
        return;
    }
    var someHtml = 'stChoose.aspx?id=' + str;
    oldDiv = document.getElementById('vzivo');
    newDiv = document.createElement(oldDiv.tagname);
    newDiv.id = oldDiv.id;
    newDiv.className = oldDiv.className;


    xmlhttp.open('GET', someHtml, false);
    xmlhttp.send(null);
    newDiv.innerHTML = xmlhttp.responseText;

    oldDiv.parentNode.replaceChild(newDiv, oldDiv);

    //var url = "stChoose.aspx?id=" + str;
    
    /*xmlhttp.open("GET", url, false);
    xmlhttp.send(null);
    document.getElementById("vzivo").innerHTML = xmlhttp.responseText;*/

}