Just wanted to know if it is possible to create a hidden window using javascript?
Under IE 9+ you can create a window off-screen:
var options = "left=" + (screen.width*2) + ",top=0";
var myWin = window.open(url, name, options);
// Hide the window - IE only
myWin.blur();
// Show the window - IE only
myWin.focus();
screen.width is your monitor width. Using "*2" allows for users with dual monitors.
This does not work under Chrome.