function hinde(menuid){

submenuname="sub_menu_" + menuid
menuname="main_menu_" + menuid
document.getElementById(submenuname).style.visibility = "hidden"
document.getElementById(menuname).style.backgroundColor = "#3169A5"
}

function show(menuid){
submenuname="sub_menu_" + menuid
menuname="main_menu_" + menuid
document.getElementById(submenuname).style.visibility = "visible"
document.getElementById(menuname).style.backgroundColor = "#658FBC"
}