var rahmend = new Date();
var rahmendm = rahmend.getMonth() + 1;
var dateiendung = "jpg";

if(rahmendm==4){var dateiendung = "png"};

document.write('<style type="text/css">');

document.write('td.MasterBorderLeftTop {background-image:url(../LMGraphics/Backgrounds/wallpaper_'+ rahmendm +'_lo.' + dateiendung + ');background-repeat:no-repeat}');

document.write('td.MasterBorderTop {background-image:url(../LMGraphics/Backgrounds/wallpaper_' + rahmendm + '_o.' + dateiendung + '); background-repeat: repeat-x}');

document.write('body {background-image:url(../LMGraphics/Backgrounds/wallpaper_' + rahmendm + '_l.' + dateiendung + '); background-repeat: repeat-y; background-position: 0px 150px}');

document.write('</style>');