It is not easy but possible: function copyToClipboard(meintext) { if (window.clipboardData) window.clipboardData.setData(“Text”, meintext); else if (window.netscape) { netscape.security.PrivilegeManager.enablePrivilege(‘UniversalXPConnect’); var clip = Components.classes[‘@mozilla.org/widget/clipboard;1’].createInstance(Components.interfaces.nsIClipboard); if (!clip) return false; var trans = Components.classes[‘@mozilla.org/widget/transferable;1’].createInstance(Components.interfaces.nsITransferable); if (!trans) return false; trans.addDataFlavor(‘text/unicode’); var str = new Object(); var len = new Object(); var str = Components.classes[“@mozilla.org/supports-string;1”].createInstance(Components.interfaces.nsISupportsString); str.data=meintext; trans.setTransferData(“text/unicode”,str,meintext.length*2); var clipid=Components.interfaces.nsIClipboard; if (!clipid) … Read more