function maximizeWindow() 
{        
    var offset = (navigator.userAgent.indexOf("Mac") != -1 || 
                  navigator.userAgent.indexOf("Gecko") != -1 || 
                  navigator.appName.indexOf("Netscape") != -1) ? 0 : 4;
    window.moveTo(-offset, -offset);
    window.resizeTo(screen.availWidth + (2 * offset), 
                   screen.availHeight + (2 * offset));
}

function openCenteredWindow(url) 
{
    var width = 1028;
    var height = 772;
    var left = parseInt((screen.availWidth/2) - (width/2));
    var top = parseInt((screen.availHeight/2) - (height/2));
    var windowFeatures = "width=" + width + ",height=" + height + 
        ",left=" + left + ",top=" + top + 
        ",screenX=" + left + ",screenY=" + top;
    myWindow = window.open(url, "subWind", windowFeatures);
 }