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) {
//Beginn der PreLoad Bilder
id1_over = newImage("images/firmenprofil-2.jpg");
id2_over = newImage("images/leistungen-2.jpg");
id3_over = newImage("images/kundengruppen-2.jpg");
id4_over = newImage("images/fotogalerie-2.jpg");
id5_over = newImage("images/faq-2.jpg");
id7_over = newImage("images/symbol-privat-rot.gif");
id8_over = newImage("images/symbol-immobilien-rot.gif");
id9_over = newImage("images/symbol-industrie-rot.gif");
id10_over = newImage("images/symbol-gemeinde-rot.gif");
id11_over = newImage("images/symbol-reinigung-rot.gif");
id12_over = newImage("images/symbol-inspektion-rot.gif");
id13_over = newImage("images/symbol-dichtheitspruefung-rot.gif");
id14_over = newImage("images/symbol-sanierung-leitungen-rot.gif");
id15_over = newImage("images/symbol-sanierung-bauwerke-rot.gif");
id16_over = newImage("images/symbol-erneuerung-leitungen-rot.gif");
id17_over = newImage("images/symbol-qualitaetsnachweise-rot.gif");
id18_over = newImage("images/symbol-qualifizierung-rot.gif");

//Ende der PreLoad Bilder
preloadFlag = true;
}
}