function centerWindow1(adress) {
if (document.all)
var xMax = screen.width, yMax = screen.height;
else
if (document.layers)
var xMax = window.outerWidth, yMax = window.outerHeight;
else
var xMax = 640, yMax=480;
var xOffset = (xMax - 200)/2, yOffset = (yMax - 338)/2;
window.open(adress, "Popup", 'scrollbars=no,menubars=no,toolbars=no,resizable=no,width=200,height=338,screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset+'');
}

function centerWindow2(adress) {
if (document.all)
var xMax = screen.width, yMax = screen.height;
else
if (document.layers)
var xMax = window.outerWidth, yMax = window.outerHeight;
else
var xMax = 640, yMax=480;
var xOffset = (xMax - 586)/2, yOffset = (yMax - 385)/2;
window.open(adress, "Popup", 'scrollbars=no,menubars=no,toolbars=no,resizable=no,width=586,height=385,screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset+'');
}

function centerWindow3(adress) {
if (document.all)
var xMax = screen.width, yMax = screen.height;
else
if (document.layers)
var xMax = window.outerWidth, yMax = window.outerHeight;
else
var xMax = 750, yMax=480;
var xOffset = (xMax - 704)/2, yOffset = (yMax - 214)/2;
window.open(adress, "Popup", 'scrollbars=no,menubars=no,toolbars=no,resizable=no,width=704,height=214,screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset+'');
}

function centerWindow4(adress) {
if (document.all)
var xMax = screen.width, yMax = screen.height;
else
if (document.layers)
var xMax = window.outerWidth, yMax = window.outerHeight;
else
var xMax = 640, yMax=480;
var xOffset = (xMax - 250)/2, yOffset = (yMax - 180)/2;
window.open(adress, "Popup", 'scrollbars=no,menubars=no,toolbars=no,resizable=no,width=250,height=180,screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset+'');
}