function loginShow(idFormLogin,loginClicked) {//
    if (document.getElementById(idFormLogin).style.visibility == "hidden") {//
        var loginTop = loginClicked.offsetTop;
        var loginLeft = loginClicked.offsetLeft;
        posClicked = findPos(loginClicked);
        document.getElementById('divLogIn').style.top = (posClicked[1] + 25) + "px";
        document.getElementById('divLogIn').style.left = (posClicked[0] - 150) + "px";
        document.getElementById(idFormLogin).style.visibility = "visible";
    } else {//check for entry and submit
        document.getElementById(idFormLogin).style.visibility = "hidden";
        document.getElementById('submitLogIn').click();
    }

}

function findPos(obj) {
    var curLeft = curtop = 0;
    if (obj.offsetParent) {
        curLeft = obj.offsetLeft
        curTop = obj.offsetTop
        while (obj = obj.offsetParent) {
            curLeft += obj.offsetLeft
            curTop += obj.offsetTop
        }
    }
    return [curLeft, curTop];
}