function init(){
    var left = document.getElementById("bodyLeft");
    var center = document.getElementById("bodyCenter");
    var right = document.getElementById("bodyRight");
    
    var lh = left.offsetHeight;
    var ch = center.offsetHeight;
    var rh = right.offsetHeight;
    
    if(lh > rh){
        if(lh > ch){
            center.style.height = lh+"px";
        }
    }
    else{
        if(rh > ch){
            center.style.height = rh+"px";
        }
    }
    
}
window.onload = init;