function resize_portal_boxes() {
    var actueel_block = document.getElementById("actueel_block");
    var direct_naar = document.getElementById("direct_naar");
    var meest_gezocht = document.getElementById("meest_gezocht");
    
    max_height = actueel_block.offsetHeight;
    
    if (direct_naar != null && direct_naar.offsetHeight > max_height) max_height = direct_naar.offsetHeight;
    if (meest_gezocht != null && meest_gezocht.offsetHeight > max_height) max_height = meest_gezocht.offsetHeight;

    actueel_block.style.height = max_height+"px";
    direct_naar.style.height = max_height+"px";
    meest_gezocht.style.height = max_height+"px";
}

function resize_hp_boxes() {
    //startpagina first
    kop1 = document.getElementById("koppelbox1");
    kop2 = document.getElementById("koppelbox2");
    kop3 = document.getElementById("koppelbox3");
    
    kop1_ul = kop1.getElementsByTagName("ul")[0];
    kop2_ul = kop2.getElementsByTagName("ul")[0];
    kop3_ul = kop3.getElementsByTagName("ul")[0];
    max_height = kop1_ul.offsetHeight;
    if (kop2_ul.offsetHeight > max_height) max_height = kop2_ul.offsetHeight;
    if (kop3_ul.offsetHeight > max_height) max_height = kop3_ul.offsetHeight;
    
    kop1_ul.style.height = max_height+"px";
    kop2_ul.style.height = max_height+"px";
    kop3_ul.style.height = max_height+"px";
    
    left_box = document.getElementById("left_wysiwyg");
    left_div = left_box.getElementsByTagName("div")[0];
    
    right_wysiwyf = document.getElementById("right_koppel");
    right_div = right_wysiwyf.getElementsByTagName("div")[0];
    max_height = left_div.offsetHeight;
    
    if (right_div.offsetHeight > max_height) max_height = right_div.offsetHeight;
    left_div.style.height = max_height+"px";
    right_div.style.height = max_height+"px";
}