function showMenu() {
        document.getElementById('side_menu').style.display = "block";
}
function hideMenu() {
        document.getElementById('side_menu').style.display = "none";
};

// Menu related
function showMenu1(div_name,div_tviton) {

        document.getElementById(div_name).style.display = "block";

     var elem = document.getElementById(div_tviton);
     var w = elem.offsetWidth;
     var h = elem.offsetHeight;
     var l = 0;
     var t = 0;
       while (elem) {
          l += elem.offsetLeft;
          t += elem.offsetTop;
          elem = elem.offsetParent;
                     }
    document.getElementById(div_name).style.top =t+0;
    document.getElementById(div_name).style.left =l+199;
    //alert ("left:"+l+", top:"+t+", width:"+w+", height:"+h);

}
function hideMenu1(div_name) {
        document.getElementById(div_name).style.display = "none";

}