var wstat
var ns4up = (document.layers) ? 1 : 0
var ie4up = (document.all) ? 1 : 0
var xsize = screen.width
var ysize = screen.height
var breite=200
var hoehe=320
var xpos=(xsize-breite)/2
var ypos=(ysize-hoehe)/2

function popup() {
	wstat=window.open("impressum.html","","scrollbars=yes,status=no,toolbar=no,location=no,directories=no,resizable=no,menubar=no,width="+breite+",height="+hoehe+",screenX="+xpos+",screenY="+ypos+",top="+ypos+",left="+xpos)
};