function openbludisteWindow() {
iMyWidth = (window.screen.width/2) - (243 + 10)
iMyHeight = (window.screen.height/2) - (258 + 25)
Fokus = window.open("", "bludiste","height=517, width=486, resizable=no, menubar=no, toolbar=no, resizable=no, copyhistory=no, left=" + iMyWidth + ",top=" + iMyHeight + ",screenX=" + iMyWidth + ",screenY=" + iMyHeight + ",scrollbars=no");
Fokus.focus()
}

function openpexesoWindow() {
iMyWidth = (window.screen.width/2) - (234 + 10)
iMyHeight = (window.screen.height/2) - (160 + 25)
Fokus = window.open("", "pexeso","height=320, width=468, resizable=no, menubar=no, toolbar=no, resizable=no, copyhistory=no, left=" + iMyWidth + ",top=" + iMyHeight + ",screenX=" + iMyWidth + ",screenY=" + iMyHeight + ",scrollbars=no");
Fokus.focus()
}

function opentetrisWindow() {
iMyWidth = (window.screen.width/2) - (155 + 10)
iMyHeight = (window.screen.height/2) - (225 + 25)
Fokus = window.open("", "tetris","height=450, width=310, resizable=no, menubar=no, toolbar=no, resizable=no, copyhistory=no, left=" + iMyWidth + ",top=" + iMyHeight + ",screenX=" + iMyWidth + ",screenY=" + iMyHeight + ",scrollbars=no");
Fokus.focus()
}

function openpuzzleWindow() {
iMyWidth = (window.screen.width/2) - (249 + 10)
iMyHeight = (window.screen.height/2) - (160 + 25)
Fokus = window.open("", "puzzle","height=320, width=498, resizable=no, menubar=no, toolbar=no, resizable=no, copyhistory=no, left=" + iMyWidth + ",top=" + iMyHeight + ",screenX=" + iMyWidth + ",screenY=" + iMyHeight + ",scrollbars=no");
Fokus.focus()
}