//Kontextmenue
//document.oncontextmenu = keinkontext;
//function keinkontext()
//{
// return false;
//}

function newImage(arg) {
        if (document.images) {
                rslt = new Image();
                rslt.src = arg;
                return rslt;
        }
}

function changeImages() {
        if (document.images && (preloadFlag == true)) {
                for (var i=0; i<changeImages.arguments.length; i+=2) {
                        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
                }
        }
}

var preloadFlag = false;
function preloadImages() {
        if (document.images) {
                index_08_over = newImage("../images/index_08-over.jpg");
                index_09_index_08_over = newImage("images/index_09-index_08_over.jpg");
                index_10_over = newImage("../images/index_10-over.jpg");
                index_11_index_10_over = newImage("../images/index_11-index_10_over.jpg");
                index_12_over = newImage("../images/index_12-over.jpg");
                index_14_over = newImage("../images/index_14-over.jpg");
                index_15_index_14_over = newImage("../images/index_15-index_14_over.jpg");
                index_16_over = newImage("../images/index_16-over.jpg");
                preloadFlag = true;
        }
}


Normal01 = new Image();
Normal01.src = "./images/index_071.jpg";     /* erste Standard-Grafik */
Over01 = new Image();
Over01.src = "./images/index_071_over.jpg"; /* erste Highlight-Grafik */


function book_images(Bildnr,Bildobjekt) {
 window.document.images[Bildnr].src = Bildobjekt.src;
}

function guestbook()
{
F1 = window.open("./guestbook/index.php","guestbook","width=525,height=550,left=0,top=0,scrollbars","");
}

function checkForm()
{
 if(document.guest.name.value == "")
 {
  alert("Please insert your name!");
        document.guest.name.focus();
        return false;
 }

  if(document.guest.email.value == "" || document.guest.email.value.indexOf('@') <= 0)
  {
  alert("Not valid email!");
        document.guest.email.focus();
        return false;
  }
  if(document.guest.message.value == "")
  {
  alert("Please insert your message!");
         document.guest.message.focus();
         return false;
  }

}