function toggleImage(imgName, imgObject) {
    eval("window.document.images['"+imgName+"'].src = "+imgObject+".src");
}

function toggleFormImage(obj, imgObject) {
    eval("obj.src = "+imgObject+".src");
}

but_schliessen_no = new Image();    but_schliessen_no.src = "gen-button-blau-schliessen-no.gif";
but_schliessen_ms = new Image();    but_schliessen_ms.src = "gen-button-blau-schliessen-ms.gif";

but_ausdrucken_no = new Image();    but_ausdrucken_no.src = "but_schliessen_no.gif";
but_ausdrucken_ms = new Image();    but_ausdrucken_ms.src = "but_schliessen_no.gif";