window.onload = function() 
    {
        var sideBar = document.getElementById("sidebarContainer");
        var mainContent = document.getElementById("mainContent");
        
        if (sideBar.offsetHeight < mainContent.offsetHeight)
            sideBar.style.height = String(mainContent.offsetHeight) + "px";
        else
            mainContent.style.height = String(sideBar.offsetHeight - 30) + "px";
        
        sideBar.style.backgroundColor = '#ccddee';
    };