function PrintPreview()  {
   var currCSS = document.getElementById('print.css');
        currCSS.sheet.cssRules[1].media.mediaText = 'all';
        currCSS = document.getElementById('basemod.css');
        currCSS.sheet.cssRules[1].media.mediaText = 'none';
}
 function openPrintPreview (printLink) {
    printBox = window.open(printLink, "Druckvorschau");
    printBox.focus();
 }