var bildOn = new Image();// Erzeugung eines Bild-Objekts 

bildOn.src = "images/myl/m-home-a.png";// Angabe der Bilddatei 

  

var bildOff = new Image(); 

bildOff.src = "images/myl/m-home-b.png"; 

var bild1On = new Image();// Erzeugung eines Bild-Objekts 

bild1On.src = "images/myl/m-news-a.png";// Angabe der Bilddatei 

  

var bild1Off = new Image(); 

bild1Off.src = "images/myl/m-news-b.png"; 


var bild2On = new Image();// Erzeugung eines Bild-Objekts 

bild2On.src = "images/myl/m-liga-a.png";// Angabe der Bilddatei 

  

var bild2Off = new Image(); 

bild2Off.src = "images/myl/m-liga-b.png"; 


var bild3On = new Image();// Erzeugung eines Bild-Objekts 

bild3On.src = "images/myl/m-forum-a.png";// Angabe der Bilddatei 

  

var bild3Off = new Image(); 

bild3Off.src = "images/myl/m-forum-b.png"; 


var bild4On = new Image();// Erzeugung eines Bild-Objekts

bild4On.src = "images/myl/flag_akt_d.jpg";// Angabe der Bilddatei



var bild4Off = new Image();

bild4Off.src = "images/myl/flag_off_d.jpg";

  
var bild5On = new Image();// Erzeugung eines Bild-Objekts

bild5On.src = "images/myl/flag_akt_en.jpg";// Angabe der Bilddatei


var bild5Off = new Image();

bild5Off.src = "images/myl/flag_off_en.jpg";

var bild6On = new Image();// Erzeugung eines Bild-Objekts

bild6On.src = "images/myl/flag_akt_fr.jpg";// Angabe der Bilddatei


var bild6Off = new Image();

bild6Off.src = "images/myl/flag_off_fr.jpg";

var bild7On = new Image();// Erzeugung eines Bild-Objekts

bild7On.src = "images/myl/m-admin-a.png";// Angabe der Bilddatei


var bild7Off = new Image();

bild7Off.src = "images/myl/m-admin-b.png"

var bild8On = new Image();// Erzeugung eines Bild-Objekts

bild8On.src = "images/buttons/FragezeichenON.png";// Angabe der Bilddatei


var bild8Off = new Image();

bild8Off.src = "images/buttons/FragezeichenOFF.png";

var bild9On = new Image();// Erzeugung eines Bild-Objekts

bild9On.src = "images/myl/m-lupe-a.png";// Angabe der Bilddatei


var bild9Off = new Image();

bild9Off.src = "images/myl/m-lupe-b.png";

function img_act(imgName) { 

var imgOn = eval(imgName + "On.src"); 

document[imgName].src = imgOn; 

} 

function img_inact(imgName) { 

var imgOff = eval(imgName + "Off.src"); 

document[imgName].src= imgOff; 

}
<!-- Begin
function isodatetime() {
var today = new Date();
var year  = today.getYear();
if (year < 2000)    // Y2K Fix, Isaac Powell
year = year + 1900; // http://onyx.idbsu.edu/~ipowell
var month = today.getMonth() + 1;
var day  = today.getDate();
var hour = today.getHours();
var hourUTC = today.getUTCHours();
var diff = hour - hourUTC;
if (diff < -12)
{
 diff = diff + 24;
}
else {
if (diff > 12)
{
 diff = diff - 24;
}
}
var hourdifference = Math.abs(diff);
var minute = today.getMinutes();
var minuteUTC = today.getUTCMinutes();
var minutedifference;
var second = today.getSeconds();
var timezone;
if (minute != minuteUTC && minuteUTC < 30 && diff < 0) { hourdifference--; }
if (minute != minuteUTC && minuteUTC > 30 && diff > 0) { hourdifference--; }
if (minute != minuteUTC) {
minutedifference = ":30";
}
else {
minutedifference = ":00";
}
if (hourdifference < 10) {
timezone = "0" + hourdifference + minutedifference;
}
else {
timezone = "" + hourdifference + minutedifference;
}
if (diff < 0) {
timezone = "-" + timezone;
}
else {
timezone = "+" + timezone;
}
if (hour > 11) {
sign = "pm";
hour = hour - 12;
}
else
{
sign = "am";
if (hour == 0)
 {
  hour = 12;
 }
}
if (month <= 9) month = "0" + month;
if (day <= 9) day = "0" + day;
if (hour <= 9) hour = "0" + hour;
if (minute <= 9) minute = "0" + minute;
if (second <= 9) second = "0" + second;
time = hour + ":" + minute + sign + timezone;
document.isoclock.display.value = time;
window.setTimeout("isodatetime();", 500);
}
//  End -->
<!--
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
//-->
var popopWin2;
function openSized2(in_uri,theWidth,theHeight) {
        var theTop=((screen.height/2)-(theHeight/2))/2;
        var theLeft=(screen.width/2)-(theWidth/2);
        var features='height=' + theHeight + ',width=' + theWidth + ',top='+theTop+',left='+theLeft+",toolbar=0,Location=0,Directories=0,Status=0,menubar=0,Scrollbars=0,Resizable=0";
        popupWin2 = window.open(in_uri,'ss',features);
        popupWin2.focus();
}