var ie4 = (document.all) ? true : false;
var ns4 = (document.layers) ? true : false;
var ns6 = (document.getElementById && !document.all) ? true : false;
var pfeil = new Image(21,22); pfeil.src = "/sd/gfx/menu/pfeil_menu.gif";	
var pfeilb = new Image(9,9); pfeilb.src = "/sd/gfx/menu/pfeil_blau.gif";
var pfeilk = new Image(6,10); pfeilk.src = "/sd/gfx/menu/pfeil_klein.gif";		
var white = new Image(1,1); white.src = "/sd/gfx/menu/white.gif";
var space = new Image(1,1); space.src = "/sd/gfx/menu/space.gif";
var currentLayer="";
if (ns6){invisibleStyle="display:none";}else{invisibleStyle="visibility:hidden";}
if(window.Event)document.captureEvents(Event.MOUSEMOVE);
document.onmousemove=checkMouse;
reloadPage(true);

function printWindow( url)
{
    var win;

    win = open( url, "printwin", 
                "toolbar=1,location=0,directories=0,status=0,menubar=1"+
                ",resizable=1,dependent=1,width=600,height=450");

}

function formWindow( url)
{
    var win;

    win = open( url, "formwin", 
                "toolbar=0,location=0,directories=0,status=0,menubar=0"+
                ",scrollbars=1,resizable=1,dependent=1,width=500,height=550");

}

function mailWindow( url)
{
    var win;

    win = open( url, "mailwin",
                "toolbar=0,location=0,directories=0,status=0,menubar=0"+
                ",resizable=1,dependent=1,width=600,height=450");

}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function hideLayer(lay) {
if (ie4) {document.all[lay].style.visibility = "hidden";}
if (ns4) {document.layers[lay].visibility = "hide";}
if (ns6) {document.getElementById([lay]).style.display = "none";}
}

function showLayer(lay) {
if (ie4) {document.all[lay].style.visibility = "visible";}
if (ns4) {document.layers[lay].visibility = "show";}
if (ns6) {document.getElementById([lay]).style.display = "block";}
}

function over(name){ 
if(ns4){document.layers[currentLayer].document.images[name].src = pfeil.src;}
else{document.images[name].src = pfeil.src;}
imageName = name;
}

function out(){ 
if(ns4){document.layers[currentLayer].document.images[imageName].src = white.src;}
else{document.images[imageName].src = white.src;}
}

function over2(name){ 
if (name.substring(0,1)=='s') {document.images[name].src = pfeilb.src;}
if (name.substring(0,1)=='o'){document.images[name].src = pfeilk.src;}
imageName = name;
}

function out2(){ 
document.images[imageName].src = space.src;
}

function navi(lay){
if(currentLayer!=""){hideLayer(currentLayer)};
if(lay==currentLayer){hideLayer(lay);currentLayer="";}
else{showLayer(lay);currentLayer=lay;}
}

function reloadPage(init) {
if (init==true) with (navigator) {if (ns4) {
  document.pgW=innerWidth; document.pgH=innerHeight; onresize=reloadPage; }}
  else if (innerWidth!=document.pgW || innerHeight!=document.pgH) location.reload();
}

function checkMouse(e){
if (currentLayer!=""){
if(window.Event){ x = e.pageX; y = e.pageY; }
else { x = event.clientX; y = event.clientY; }	
if (currentLayer=="i01"&&(x<0||y<70||x>185||y>420))navi("i01");
if (currentLayer=="i02"&&(x<185||y<70||x>369||y>480))navi("i02");
if (currentLayer=="i03"&&(x<369||y<70||x>553||y>380))navi("i03");
if (currentLayer=="i04"&&(x<553||y<70||x>738||y>380))navi("i04");
}
}