function displayWindow(theURL,winName,width,height,features) { //v3.1
    var window_width = width;
    var window_height = height;
    var newfeatures= features;
    var window_top = (screen.height-window_height)/2;
    var window_left = (screen.width-window_width)/2;
    newWindow=window.open(''+ theURL + '',''+ winName + '','width=' + window_width + ',height=' + window_height + ',top=' + window_top + ',left=' + window_left + ',features=' + newfeatures + '');
    newWindow.focus();
}

function fullWindow(url) {
  var str = "left=0,screenX=0,top=0,screenY=0,resizable,status=no,location=no,toolbar=no,scrollbars=yes";
  if (window.screen) {      
    var ah = screen.availHeight - 30;      
    var aw = screen.availWidth - 10;      
    str += ",height=" + ah;      
    str += ",innerHeight=" + ah;      
    str += ",width=" + aw;      
    str += ",innerWidth=" + aw;    
  }    
  win=window.open(url, "w", str);
}