function BodyOnLoad()
{
	tabSetup();
	addHandlers(document);
}

var instructOff = new Image();
instructOff.src = "buttons/btn_instructors_off.gif";
var instructOn = new Image();
instructOn.src = "buttons/btn_instructors_on.gif";
var classesOff = new Image();
classesOff.src = "buttons/btn_classes_off.gif";
var classesOn = new Image();
classesOn.src = "buttons/btn_classes_on.gif";
var studentsOff = new Image();
studentsOff.src = "buttons/btn_students_off.gif";
var studentsOn = new Image();
studentsOn.src = "buttons/btn_students_on.gif";
var lessonsOff = new Image();
lessonsOff.src = "buttons/btn_lessons_off.gif";
var lessonsOn = new Image();
lessonsOn.src = "buttons/btn_lessons_on.gif";
var examsOff = new Image();
examsOff.src = "buttons/btn_exams_off.gif";
var examsOn = new Image();
examsOn.src = "buttons/btn_exams_on.gif";
var reportsOff = new Image();
reportsOff.src = "buttons/btn_reports_off.gif";
var reportsOn = new Image();
reportsOn.src = "buttons/btn_reports_on.gif";
var optionsOff = new Image();
optionsOff.src = "buttons/btn_options_off.gif";
var optionsOn = new Image();
optionsOn.src = "buttons/btn_options_on.gif";
var archiveOff = new Image();
archiveOff.src = "buttons/btn_archive_off.gif";
var archiveOn = new Image();
archiveOn.src = "buttons/btn_archive_on.gif";

var helpOff = new Image();
helpOff.src = "buttons/btn_help_off.gif";
var helpOn = new Image();
helpOn.src = "buttons/btn_help_on.gif";
var logoutOff = new Image();
logoutOff.src = "buttons/btn_logout_off.gif";
var logoutOn = new Image();
logoutOn.src = "buttons/btn_logout_on.gif";
var homeOff = new Image();
homeOff.src = "buttons/btn_home_off.gif";
var homeOn = new Image();
homeOn.src = "buttons/btn_home_on.gif";


var loginOff = new Image();
loginOff.src = "buttons/btn_login_off.gif";
var loginOn = new Image();
loginOn.src = "buttons/btn_login_on.gif";



function moveButton (btnName,btnState)
{
    document.images[btnName].src = eval(btnName+btnState+".src");
}

function swapBtn(imgName,state) {
	document.images[imgName].src = eval("'buttons/"+imgName+"_"+state+".gif'");
}