function closePreorder() {
    $("#overlay").css("display", "none").fadeOut();
    $("#preorderContainer").hide();
}

function showPreorder() {
    $("#waitlistError").empty();

    var width = 300;
    var screenWidth = document.body.clientWidth;
    var leftMargin = screenWidth/2 - width/2;
    var rightMargin = leftMargin;

    $("#overlay")
        .css({"display": "block",
        	  "min-width": leftMargin + 20 + width + "px"}).fadeIn();

    $("#preorderContainer")
        .css({"left": leftMargin + "px",
              "right": rightMargin + "px",
              "width": width + "px"}).show();
}