function launchWindow(id) {

        var myCookie = readCookie('amedisin1');
        if(myCookie != null) return;
        {

        //Get the screen height and width
        var maskHeight = $(document).height();
        var maskWidth = $(window).width();

        //Set heigth and width to mask to fill up the whole screen
        $('#mask').css({'width':maskWidth,'height':maskHeight});

        //transition effect
        $('#mask').fadeIn(1000);
        $('#mask').fadeTo("slow",0.8);

        //Get the window height and width
        var winH = $(window).height();
        var winW = $(window).width();

        //Set the popup window to center
        $(id).css('top',  winH/2-$(id).height());
        $(id).css('left', winW/2-$(id).width()/2);

        //transition effect
        $(id).fadeIn(2000);
        }

        else {
        createCookie('amedisin1',1,7);

        }

}