$(document).ready(function() {
    /* Define the height of the Global-Block Div */
    var content_height = $('#content').height();
    var subnavigation_height = $('#subnavigation').height();
    if(subnavigation_height!=null) {
        var paddings = 101;
    } else {
        var paddings = 81;
        subnavigation_height = 0;
    }
    var globalblock_height_new = content_height-subnavigation_height-paddings;
    $('#globalblock').children('div.box_middle').css('height',globalblock_height_new);
});