function window_open(datei,name,w,h)
{
	var hori = screen.availWidth;
	var verti = screen.availHeight;
	popup = window.open(datei,name,'width='+ w +',height='+ h +',left='+((hori - w- 10)* .5) +',top='+((verti - h- 30)* .5)+',scrollbars=yes,resizable=no')
	popup.focus()
}

/* Zum Schließen des Lommel-Popup */
function close_popup() {
	document.getElementById('lommel_popup').style.display='none';
}