function preload(arrImages)
{
    dummy = new Image();
    for (i=0; i<arrImages.length; i++)
    {
         dummy.src = "/pics/" + arrImages[i];
    }
}

function bildAn(menueID, ID)
{
    if ( ID == "1" )
	{
		document.images[menueID + "Licht"].src = "pics/licht_an_klein.gif";
	}
	else
		document.images[menueID + "Licht"].src = "pics/licht_an.gif";
}

function bildAus(menueID, ID)
{
    if ( ID == "1" )
	{
		document.images[menueID + "Licht"].src = "pics/licht_aus_klein.gif";
	}
	else
		document.images[menueID + "Licht"].src = "pics/licht_aus.gif";
}