/*
* menuDropdown.js - implements an dropdown menu based on a HTML list
* Author: Dave Lindquist (http://www.gazingus.org)
*/
//
// Browser Detection
//

isMac = (navigator.appVersion.indexOf("Mac")!=-1) ? true : false;
NS4 = (document.layers) ? true : false;
IEmac = ((document.all)&&(isMac)) ? true : false;
IE4plus = (document.all) ? true : false;
IE4 = ((document.all)&&(navigator.appVersion.indexOf("MSIE 4.")!=-1)) ? true : false;
IE5 = ((document.all)&&(navigator.appVersion.indexOf("MSIE 5.")!=-1)) ? true : false;
IE6 = ((document.all)&&(navigator.appVersion.indexOf("MSIE 6.")!=-1)) ? true : false;
IE7 = ((document.all)&&(navigator.appVersion.indexOf("MSIE 7.")!=-1)) ? true : false;
ver4 = (NS4 || IE4plus) ? true : false;
NS6 = (!document.layers) && (navigator.userAgent.indexOf('Netscape')!=-1)?true:false;

IE5plus = IE5 || IE6;
IEMajor = 0;

if (IE4plus)
{
var start = navigator.appVersion.indexOf("MSIE");
var end = navigator.appVersion.indexOf(".",start);
IEMajor = parseInt(navigator.appVersion.substring(start+5,end));
IE5plus = (IEMajor>=5) ? true : false;
}

var ie = false;
if ((document.all)&&(navigator.appVersion.indexOf("MSIE 5")!=-1)) {
ie = true;
}
if ((document.all)&&(navigator.appVersion.indexOf("MSIE 6")!=-1)) {
ie = true;
}

var currentMenu = null;
if (!document.getElementById)
document.getElementById = function() { return null; }

function initializeMenu(menuId, actuatorId,position) {
var menu = document.getElementById(menuId);
var actuator = document.getElementById(actuatorId);
if (menu == null || actuator == null) return;
//if (window.opera) return; // I'm too tired

actuator.onmouseover = function() {
if (currentMenu == null) {
this.showMenu(position);
}
else if(currentMenu) {
currentMenu.style.visibility = "hidden";
this.showMenu(position);
}
a=0;
return false;
}

actuator.onmouseout = function() {
a=1;
setTimeout('if(a==1){currentMenu.style.visibility = "hidden"};',1000);
}

menu.onmouseover = function(){
a=0;
}

menu.onmouseout = function() {
a=1;
setTimeout('if(a==1){currentMenu.style.visibility = "hidden"};',1000);
}

//~ actuator.showMenu = function(position) {
//~ if (document.all){
//~ menu.style.left = this.offsetLeft + 80 - position + "px";
//~ }
//~ else {
//~ menu.style.left = this.offsetLeft - position + "px";
//~ }
//~ menu.style.top = this.offsetTop + this.offsetHeight + 50 + "px";
//~ menu.style.visibility = "visible";
//~ currentMenu = menu;
//~ }
actuator.showMenu = function() {
var ieto = -11;
var ielo = 0;
if (ie) {
ieto = 0;
ielo = 0;
}
else if (IE7){
ieto = 0;
ielo = 0;
}
menu.style.left = this.offsetLeft + ielo+ "px";
menu.style.top = this.offsetTop + this.offsetHeight - ieto + "px";
menu.style.visibility = "visible";
currentMenu = menu;
}
}