function showpopupdiv(obj) {
    obj.parentNode.getElementsByTagName('div')[0].style.display='block';
}
function hidepopupdiv(obj) {
    obj.parentNode.parentNode.style.display='none';
}
function changeselect(selId, optVal) {
    var sel = document.getElementById(selId);
    var selOptArray = sel.options;
    for (var i = 0; i < sel.length; i++) {
        if (selOptArray[i].value == optVal) {
            sel.selectedIndex = i;
            sel.style.color = '#fff';
            sel.style.backgroundColor = '#68c';
        }
    }
}
function backToCountysMap() {
    document.getElementById('imgMapPic').style.display = 'block';
    document.getElementById('setCountyPic').style.display = 'none';
    document.getElementById('mapBox').style.display = 'none';
}
function rotateBanner(div_id,nextIdNum, milisec) {
    var picArray = document.getElementById(div_id).getElementsByTagName("div");

    for (var i=0;i<picArray.length;i++) {
        if (i == nextIdNum) {picArray[i].style.display = "block";}
        else                {picArray[i].style.display = "none";}
    }

    if (nextIdNum == (picArray.length-1)) {nextIdNum = 0;}
    else                                  {nextIdNum +=1;}

    setTimeout(function(){rotateBanner(div_id,nextIdNum, milisec);}, milisec);
}