var docHeight = $(document).height();

$(function () {
    if( !jQuery.browser.msie || jQuery.browser.version.substr(0,1) >= 7 ) {
        // Do glow on navigation menu
        var section = $('body').attr('id');
        if( section != '' ) {
            $('body#'+section+' #nav .'+section).append('<img src="/img/header/glow.png" id="glow">');
        }
    } else {
        document.execCommand("BackgroundImageCache", false, true);
        $(window).scroll(function () {
            var ieBody = (document.compatMode && document.compatMode=='CSS1Compat') ? document.documentElement : document.body;

            if( ieBody.scrollTop+ieBody.clientHeight > docHeight ) {
                var p = (ieBody.scrollTop+ieBody.clientHeight) - docHeight;
                $('#bg').css('top', p+'px');
            }
        });
    }

    $(window).resize(resize);
    resize();

    $('img, input[type=image], .pngfix').ifixpng();

    $('#social li a').cmtip();
    $('a.newwindow').click(function() {
        window.open(this.href);
        return false;
    });
});

function positionBackground()
{
    var $win = $(window);
    var $bgimg = $('#bg img');

    var winRatio = $win.width() / $win.height();
    if( winRatio < 1.333 ) {
        $bgimg.css('width', 'auto').css('height', '100%');
        var offset = $bgimg.width() - $win.width();
        $bgimg.css('top', 0).css('left', offset/2);
    } else {
        $bgimg.css('width', '100%').css('height', 'auto');
        var offset = $bgimg.height() - $win.height();
        $bgimg.css('left', 0).css('top', offset/2);
    }
}

function resize()
{
    docHeight = $(document).height();
    var $content = $("#content");

    $content.css('overflow', 'hidden')
    .css('margin-top', 0)
    .css('padding-bottom', 0);

    var height = $(window).height(),
    chromeHeight = $("#header").height() + $("#footer").height() + $("#crosslink").height()+1
    + parseInt($content.css('margin-bottom'));
    if( height > $content.height() ) {
        var diff = (height - chromeHeight- $content.height())/2;
        if( diff > 0 ) {
            if( $("#header").height() ) {
                $content.css('margin-top', diff);
            } else {
                $content.css('padding-top', diff);
            }
            $content.css('padding-bottom', diff);
        }
    }

    if (!$('.doNotResize').length) {
        positionBackground();
    }
}