equCols=function()
{ 
    var left = document.getElementById("left").offsetHeight;
    var middle = document.getElementById("middle").offsetHeight;
    var right = document.getElementById("right").offsetHeight;

    if(middle < 400){document.getElementById("totopbtnwrapper").style.display = "none";}

    if(left < middle)
    {
        document.getElementById("lnavbelow").style.height = middle - (left-34) + "px";
        document.getElementById("right").style.height = (middle+11) + "px"
    }
    if(left > middle){document.getElementById("right").style.height = (left-22) + "px"}
} 
window.onload=function(){if(document.getElementsByTagName){equCols();}}