function displayWindow(theURL,winName,width,height,features) {
var window_width = width;
var window_height = height;
var newfeatures= features;
if (screen.height - 75 <= window_height) {
window_height = screen.height - 75;
}
if (screen.width <= window_width) {
window_width = screen.width - 10;
}
var window_top = (screen.height - 75 -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();
}