function PlaySound(userid,filename) { 
  window.open("/_files/player.asp?u="+userid+"&f="+filename,"UndergroundPlayer","width=306,height=316");
}
function OpenChatWin() { 
  window.open("/_main/talk/chat211/default.asp","ChatWindow","width=500,height=500");
}
function OpenHelpWin() { 
  window.open("/_main/help/index.asp","HelpWindow","width=400,height=500");
}
function OpenHelpWinList(helpId) { 
  window.open("/_main/help/index.asp?show=list&katid="+helpId,"HelpWindow","width=400,height=500");
}
function OpenHelpWinDet(helpId) { 
  window.open("/_main/help/index.asp?show=detail&id="+helpId,"HelpWindow","width=400,height=500");
}
function powerOff() {
	self.close();
}
function showJukebox() {
 	PlaySound('','');
}
function showVideobox() {
 	alert("Die Underground-Videobox ist noch nicht verfügbar!");
}