function confirmClick(url, message) {
    var confirmed = confirm(message);
    
    if(confirmed) {
        location.href = url;
    }
}

function openEditWindow(url) {
    var x = screen.width/2-310;
    var y = screen.height/2-250;

    edit_window = window.open(url, 'ew', 'width=620,height=500,left=0,top=0,screenX=0,screenY=0,left='+x+',top='+y+',scrollbars');
    edit_window.focus();
}

function show(objekt) {
    if(document.getElementById) {
        document.getElementById(objekt).style.visibility = 'visible';
    }
}

function hide(objekt) {
    if(document.getElementById) {
        document.getElementById(objekt).style.visibility = 'hidden';
    }
}