function iframeHeight() {
    var allH = document.body.clientHeight;
    var headerH = document.getElementById("header").clientHeight;
    var newH = allH - headerH;
    document.getElementById("tframe").style.height = newH + "px";
}

function columnsHeight(val) {
    var rh = document.getElementById("right_column").clientHeight;
    var lh = document.getElementById("left_column").clientHeight;
    var mh = document.getElementById("middle_column").clientHeight;
    var temp = rh > mh ? rh : mh;
    var wh = lh > temp ? lh : temp;
    document.getElementById("wrapper").style.height = (wh + 10) + "px";
    //document.getElementById("wrapper").style.height = (wh + 10 - (val ? document.height : 0)) + "px";
    document.getElementById("right_column").style.height = wh + "px";
    document.getElementById("categories").style.height = (wh - 12) + "px";
    document.getElementById("middle_column").style.height = wh + "px";
}