function setMenu() {
    //debugger;
    var ctrl = document.getElementById("sidebar");
    var dvMain = document.getElementById("main");
    var dvHeader = document.getElementById("header");
    var dvFooter = document.getElementById("footer");
    if (dvMain.offsetHeight.toPrecision(1) < 500) {
        //ctrl.style.height = 500;
        //ctrl.style.backgroundColor = "D3D3D6";
        dvMain.style.height = 500;
        dvMain.style.backgroundColor = "white";
    }
}