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

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

function BildPopup(imagename,url,windowname){
	if (imagename){
	hoehe = document.images[imagename].height
	breite = document.images[imagename].width
	//alert(hoehe)
	}
	else{
	hoehe = 450
	breite = 500
	}
	win = window.open(url,windowname,"toolbar=0,location=0,directories=0,status=0,scrollbars=0,resizable=0,width="+breite+",height="+hoehe);
    win.focus();
}