function openFRFWindow() {
iMyWidth = (window.screen.width/2) - (250 + 10)
iMyHeight = (window.screen.height/2) - (150 + 25)
Fokus = window.open("", "FRF","height=600,width=600,resizable=no,left=0" + iMyWidth + ",top=0" + iMyHeight + ",screenX=0" + iMyWidth + ",screenY=0" + iMyHeight + ",scrollbars=yes");
Fokus.focus()
}