// Script to control DHTML menu
// Copyright 2001 Micah Bly

<!--//

var submenu_activate = null;
var submenu_timeout = null;
var bird_timeout = null;
var active_menu = 0;
// variables to control bird vertical alignment
var bird_calc = 0;
var bird_start = new Array(52,118,161);
var height = new Array(21,15,15);
// amount of space required by each submenu
var nummenus = new Array(0,5,3);
var vmargin = 8;
var topline = 74;

function itemOn(pos,mtype) {
    clearTimeout(bird_timeout);
	if (mtype>0 && active_menu==mtype) clearTimeout(submenu_timeout);
	else clearTimeout(submenu_activate);
	bird_calc = bird_start[0] + (pos*height[0]);
	
    // Turn on the bird, move to correct location
	if (document.layers) {
		document.layers.thebird.top = bird_calc;	
		document.layers.thebird.visibility = "show";
	}
	else if (document.all) {
		document.all.thebird.style.top = bird_calc;
		document.all.thebird.style.visibility = "visible";
	}
	else if (document.getElementById) {
		document.getElementById('thebird').style.top = bird_calc;
		document.getElementById('thebird').style.visibility = "visible";
	}

    // is it associated with a submenu?
  	if (mtype>0) {   // Yes, open submenu and slide rest downwards
		submenu_activate = window.setTimeout('openSub('+pos+','+mtype+');',750);
	}
	else active_menu = 0;
}

function openSub(pos,mtype) {
	active_menu = mtype;
	var vbase = topline + height[mtype]*nummenus[mtype] + vmargin;
  	var subname = 'submenu'+mtype;
	// show menu
	if (document.layers) document.layers[subname].visibility = "show";
	else if (document.all) document.all(subname).style.visibility = "visible";
	else if (document.getElementById) document.getElementById(''+subname+'').style.visibility = "visible";				
	// slide everything else down
	for(var i = pos+1; i < 9; i++) {
        var mid = "menu"+i;
        var toptemp = vbase + (height[0] * (i-1));
        if (document.layers) document.layers[mid].top = toptemp;
        else if (document.all) document.all(mid).style.top = toptemp;
		else if (document.getElementById) document.getElementById(''+mid+'').style.top = toptemp;				
	}
}


function itemOff(pos,mtype) {
	// Turn off the bird
	bird_timeout = window.setTimeout('hideBird();',125);

	// was a submenu on?
	if (mtype>0) {
		submenu_timeout = window.setTimeout('hideSub('+mtype+');',125);
	}
}

function subOn(pos,mtype) {
	clearTimeout(submenu_activate);
    clearTimeout(submenu_timeout);
    clearTimeout(bird_timeout);
	bird_calc = bird_start[mtype] + (pos*height[mtype]);
	active_menu = mtype;

    // Turn on the bird, move to correct location

	// For Netscape
	if (document.layers) {
		document.layers.thebird.top = bird_calc;	
		document.layers.thebird.visibility = "show";
	}
	else if (document.all) {
		document.all.thebird.style.top = bird_calc;
		document.all.thebird.style.visibility = "visible";
	}
	else if (document.getElementById) {
		document.getElementById('thebird').style.top = bird_calc;
		document.getElementById('thebird').style.visibility = "visible";
	}
}

function subOff(pos,mtype) {
	// Turn off the bird
	bird_timeout = window.setTimeout('hideBird();',125);

	// turn off the submenus as we leave
	submenu_timeout = window.setTimeout('hideSub('+mtype+');',125);
}

function hideSub(id) {
  	var subname = 'submenu'+id;
	// hide menu
	if (document.layers) document.layers[subname].visibility = "hide";
	else if (document.all) document.all(subname).style.visibility = "hidden";
	else if (document.getElementById) document.getElementById(''+subname+'').style.visibility = "hidden";				
	// slide everything back up
	if (id==1) var k=3;
	else var k=5;
	for(var i = k+1; i < 9; i++) {
        var mid = "menu"+i;
        var toptemp = topline + (height[0] * (i-1));
        if (document.layers) document.layers[mid].top = toptemp;
        else if (document.all) document.all(mid).style.top = toptemp;
		else if (document.getElementById) document.getElementById(''+mid+'').style.top = toptemp;				
	}
}

function hideBird(){
	if (document.layers) document.layers.thebird.visibility = "hide"
	else if (document.all) document.all.thebird.style.visibility = "hidden"  
	else if (document.getElementById) document.getElementById('thebird').style.visibility = "hidden";				
}

// reloads window on resize, if browser=Netscape
if (document.layers){
	window.onResize = reloadIt;
}

// Does actual reloading for netscape
function reloadIt() {
  document.location = document.location;
}

// -->