function fenster(url,breite,hoehe)
{
var url;
var width=breite;
var height=hoehe;
var l = (screen.availWidth - width) / 2;
var t = (screen.availHeight - height) / 2;
windowHandle = window.open(url,"extrafenster2","width="+breite+",height=" +hoehe+",screenX="+l+",screenY="+t+",left=" +l+",top="+t+",scrollbars=1,resizable=0,menubar=no"); windowHandle.focus()

}
function impressum(url,breite,hoehe)
{
var url;
var width=breite;
var height=hoehe;
var l = (screen.availWidth - width) / 2;
var t = (screen.availHeight - height) / 2;
windowHandle = window.open(url,"extrafenster","width="+breite+",height=" +hoehe+",screenX="+l+",screenY="+t+",left=" +l+",top="+t+",scrollbars=1,resizable=0,menubar=no"); windowHandle.focus()

}

function fenster2(url,breite,hoehe)
{
var url;
var width=breite;
var height=hoehe;
var l = (screen.availWidth - width) / 2;
var t = (screen.availHeight - height) / 2;
windowHandle = window.open(url,"extrafenster","width="+breite+",height=" +hoehe+",screenX="+l+",screenY="+t+",left=" +l+",top="+t+",scrollbars=1,resizable=0,menubar=no"); windowHandle.focus()

}

function fenster3(url,breite,hoehe)
{
var url;
var width=breite;
var height=hoehe;
var l = (screen.availWidth - width) / 2;
var t = (screen.availHeight - height) / 2;
windowHandle = window.open(url,"extrafenster","width="+breite+",height=" +hoehe+",screenX="+l+",screenY="+t+",left=" +l+",top="+t+",scrollbars=1,resizable=0,menubar=no"); windowHandle.focus()

}