function openvirtual1Window() {
iMyWidth = (window.screen.width/2) - (195 + 10)
iMyHeight = (window.screen.height/2) - (140 + 25)
Fokus = window.open("", "virtual1","height=280, width=390, resizable=no, menubar=no, toolbar=no, resizable=no, copyhistory=no, left=" + iMyWidth + ",top=" + iMyHeight + ",screenX=" + iMyWidth + ",screenY=" + iMyHeight + ",scrollbars=no");
Fokus.focus()
}

function openvirtual2Window() {
iMyWidth = (window.screen.width/2) - (390 + 10)
iMyHeight = (window.screen.height/2) - (225 + 25)
Fokus = window.open("", "virtual2","height=550, width=780, resizable=no, menubar=no, toolbar=no, resizable=no, copyhistory=no, left=" + iMyWidth + ",top=" + iMyHeight + ",screenX=" + iMyWidth + ",screenY=" + iMyHeight + ",scrollbars=no");
Fokus.focus()
}