function setCategories() {

    var tallest = 0;
    
    var cat1Height = 0;
    var cat2Height = 0;
    var cat3Height = 0;

    cat1Height = document.getElementById("ctl00_contentMain_cat1").offsetHeight;
    cat2Height = document.getElementById("ctl00_contentMain_cat2").offsetHeight;
    cat3Height = document.getElementById("ctl00_contentMain_cat3").offsetHeight;

    tallest = cat1Height;
    
    if (cat2Height > tallest) {
        tallest = cat2Height;
    }

    if (cat3Height > tallest) {
        tallest = cat3Height;
    }

    document.getElementById("ctl00_contentMain_cat1").style.height = tallest - 9 + "px";
    document.getElementById("ctl00_contentMain_cat2").style.height = tallest - 9 + "px";
    document.getElementById("ctl00_contentMain_cat3").style.height = tallest - 9 + "px";
    
    tallest = 0;

    var cat4Height = 0;
    var cat5Height = 0;
    var cat6Height = 0;

    cat4Height = document.getElementById("ctl00_contentMain_cat4").offsetHeight;
    cat5Height = document.getElementById("ctl00_contentMain_cat5").offsetHeight;
    cat6Height = document.getElementById("ctl00_contentMain_cat6").offsetHeight;

    tallest = cat4Height;

    if (cat5Height > tallest) {
        tallest = cat5Height;
    }

    if (cat6Height > tallest) {
        tallest = cat6Height;
    }

    document.getElementById("ctl00_contentMain_cat4").style.height = tallest + "px";
    document.getElementById("ctl00_contentMain_cat5").style.height = tallest + "px";
    document.getElementById("ctl00_contentMain_cat6").style.height = tallest + "px";
    
}