function PopUp(url,name,breite,hoehe,scrollbars) {
	var xPos = (screen.availWidth - breite) / 2
	var yPos = (screen.availHeight - hoehe ) / 2

	myWindow = window.open(url,name,"menubar=no,toolbar=no,resizeable=no,scrollbars="+scrollbars+",width="+breite+",height="+hoehe+",screenX="+xPos+",screenY="+yPos+",left="+xPos+",top="+yPos+",screenX="+xPos+",screenY="+yPos+",left="+xPos+",top="+yPos);
	myWindow.focus();
}