function sideNavOn(itemIdx){
            document.getElementById(itemIdx).style.backgroundColor = "#FFFFFF";
            document.getElementById(itemIdx).style.color = "#EAC117";
            document.getElementById(itemIdx).style.border = "solid 1px black";
            }
            function sideNavOff(itemIdx){
            document.getElementById(itemIdx).style.backgroundColor = "#FFFFFF";
            document.getElementById(itemIdx).style.color = "#006600";
            document.getElementById(itemIdx).style.border = "solid 1px white";
            }
            function topNavOn(itemIdx){
            document.getElementById(itemIdx).style.backgroundColor = "#FFFFFF";
            document.getElementById(itemIdx).style.color = "#EAC117";
            document.getElementById(itemIdx).style.border = "solid 1px white";
            }
            function topNavOff(itemIdx){
            document.getElementById(itemIdx).style.backgroundColor = "#EAC117";
            document.getElementById(itemIdx).style.color = "#FFFFFF";
            document.getElementById(itemIdx).style.border = "solid 1px white";
            }
            function showLogin(){
            document.getElementById("loginwindow").style.visibility = "visible";
            window.setTimeout('timeoutLogin()',5000);
            }
            function hideLogin(){
            document.loginform.uid.value = "";
            document.loginform.upass.value = "";
            document.getElementById("loginwindow").style.visibility = "hidden";
            }
            function timeoutLogin(){
            if (document.loginform.uid.value.length == 0 && document.loginform.upass.value.length == 0){
                hideLogin();
            } else {
                    window.setTimeout('timeoutLogin()',5000);
            }}
            
            function hideWindow(win){
                if (win == 1){
                    document.getElementById("homeworkwindow").style.visibility = "hidden";
                }else{
                    document.getElementById("gallerywindow").style.visibility = "hidden";
                }
            }
            
            function showHomework(){
            document.getElementById("gallerywindow").style.visibility = "hidden";
            document.getElementById("homeworkwindow").style.visibility = "visible";
            window.setTimeout('hideWindow(1)',5000);
            }
            
            function showGallery(){
            document.getElementById("homeworkwindow").style.visibility = "hidden";
            document.getElementById("gallerywindow").style.visibility = "visible";
            window.setTimeout('hideWindow(2)',5000);
            }