// JScript File

var whichpage=1;

function menu_on(menu){
    var e=document.getElementById("menu"+menu);
    e.style.backgroundColor='#9375A3';
}
function menu_off(menu){

    //alert(whichpage);
    if (whichpage!=menu) {
        var e=document.getElementById("menu"+menu);
        e.style.backgroundColor='#AE9FB6';
    }
}

function showcontent(content){
    //
    whichpage=content;
    
    //make all hidden
    var e=document.getElementById("c1");
    e.style.visibility="hidden";
    menu_off(1);

    e=document.getElementById("c2");
    e.style.visibility="hidden";
    menu_off(2);

    e=document.getElementById("c3");
    e.style.visibility="hidden";
    menu_off(3);

    e=document.getElementById("c4");
    e.style.visibility="hidden";
    menu_off(4);

    //make  specified content visible
    e=document.getElementById("c"+content);
    e.style.visibility="visible";
    menu_on(content);

}