var mittig = null;
var w = 0;
var h = 0;
function einblick(w,h) {
        if (window.screen) {
        var hori = screen.availWidth;
        var verti = screen.availHeight;
        mittig = window.open('einblicke/biokorntakt-1.html','','scrollbars=yes,resizable=no,width='+ w  +',height='+ h +',left='+((hori - w- 10)* .5) +',top='+((verti - h- 30)* .5))
mittig.focus()
}
}