var ver=navigator.appVersion;
var dom=document.getElementById?1:0;
var ns4=(document.layers&&!dom)?1:0;
var ns5=(dom&&parseInt(ver)>=5)?1:0;
var ie4=(document.all&&!dom)?1:0;
var ie5=(ver.indexOf("MSIE")>-1&&dom)?1:0;
var rechner=navigator.platform;
var win=(rechner.substring(0,3)=="Win")?1:0;

userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
        if (document.images) {
                rslt = new Image();
                rslt.src = arg;
                return rslt;
        }
}

function findElement(n,ly) {
        if (browserVers < 4)                return document[n];
        var curDoc = ly ? ly.document : document;
        var elem = curDoc[n];
        if (!elem) {
                for (var i=0;i<curDoc.layers.length;i++) {
                        elem = findElement(n,curDoc.layers[i]);
                        if (elem) return elem;
                }
        }
        return elem;
}

function changeImages() {
        if (document.images && (preloadFlag == true)) {
                var img;
                for (var i=0; i<changeImages.arguments.length; i+=2) {
                        img = null;
                        if (document.layers) {
                                img = findElement(changeImages.arguments[i],0);
                        }
                        else {
                                img = document.images[changeImages.arguments[i]];
                        }
                        if (img) {
                                img.src = changeImages.arguments[i+1];
                        }
                }
        }
}
// laedt die Menuebilder vor
var preloadFlag = false;
function preloadImages() {
        if (document.images) {
                m1_disco_over = newImage("Bilder/m1-disco-over.gif");
                m2_band_over = newImage("Bilder/m2-band-over.gif");
                m3_history_over = newImage("Bilder/m3-history-over.gif");
                m4_kalender_over = newImage("Bilder/m4-kalender-over.gif");
                m5_presse_over = newImage("Bilder/m5-presse-over.gif");
                m6_kontakt_over = newImage("Bilder/m6-kontakt-over.gif");
                m7_home_over = newImage("Bilder/m7-home-over.gif");
                impressum_disco_over = newImage("Bilder/impressum-disco-over.jpg");
                impressum_band_over = newImage("Bilder/impressum-band-over.jpg");
                impressum_history_over = newImage("Bilder/impressum-history-over.jpg");
                impressum_kalender_over = newImage("Bilder/impressum-kalender-over.jpg");
                impressum_presse_over = newImage("Bilder/impressum-presse-over.jpg");
                impressum_kontakt_over = newImage("Bilder/impressum-kontakt-over.jpg");
                impressum_home_over = newImage("Bilder/impressum-home-over.jpg");
                preloadFlag = true;
        }
}




// wechselt die Frames Menu und Inhalt gleichzeitig - Achtung immer Hierarchie der Frames beachten!!
function wechsel(adr2,F2,adr3,F3,adr4,F4,adr5,F5) {
  Frame2=eval("parent."+F2);
  Frame3=eval("parent."+F3);
  Frame4=eval("parent."+F4);
  Frame5=eval("parent."+F5);
  Frame2.location.href = adr2;
  Frame3.location.href = adr3;
  Frame4.location.href = adr4;
  Frame5.location.href = adr5;

}
//fuer ns4 - neu laden, wenn sich fenstergroesse aendert
function neuLaden() {
                        if (ns4) {
                                                if (innerWidth!=document.breite || innerHeight!=document.hoehe){
                                                history.go(0);
                                                document.breite=innerWidth;
                                                document.hoehe=innerHeight;
                                                }
                         }
}
//Formular abschicken, wenn der User auf Return drueckt
function entsub(ereignis,meinLayer,meinFormular,name){
        if(!ns4){
                  if (parent.mainFrame.event && parent.mainFrame.event.keyCode == 13){
                    document.meinFormular.name.click();
                }
                 else{
            return true;
                }
        }
        else if(ns4){
                if (ereignis && ereignis.which == 13){
                   doc.layers[meinLayer].document.forms[meinFormular].name.click();
                }
                  else{
                    return true;
                }
        }
}