/***********************************************
* AnyLink Vertical Menu- © Dynamic Drive (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

// About
var menu1=new Array()
menu1[0]='<a href="./join.htm"><img border="0" width="158" height="23" src="./img/t_subnav_join.png" alt="Join T4O" /></a>'
menu1[1]='<a href="./staff.htm"><img border="0" width="158" height="23" src="./img/t_subnav_staff.png" alt="Staff" /></a>'
menu1[2]='<a href="./student-ambassadors.htm"><img border="0" width="158" height="23" src="./img/t_subnav_student.png" alt="Student Ambassadors" /></a>'

// Webcams
var menu2=new Array()
menu2[0]='<a href="./underwater-cams.htm"><img border="0" width="173" height="23" src="./img/t_subnav_underwater.png" alt="Underwater Cams" /></a>'
menu2[1]='<a href="./webcam-site-conditions.htm"><img border="0" width="173" height="23" src="./img/t_subnav_conditions.png" alt="Webcam Site Conditions" /></a>'

// Galleries
var menu3=new Array()
menu3[0]='<a href="./video-gallery.htm"><img border="0" width="109" height="23" src="./img/t_subnav_video1.png" alt="Video Gallery" /></a>'
menu3[1]='<a href="./gallerylist.cfm"><img border="0" width="109" height="23" src="./img/t_subnav_photo1.png" alt="Photo Gallery 1" /></a>'
menu3[2]='<a href="./photo-gallery.htm"><img border="0" width="109" height="23" src="./img/t_subnav_photo2.png" alt="Photo Gallery 2" /></a>'


	
var disappeardelay = 100  //menu disappear speed onMouseout (in miliseconds)
var horizontaloffset = 10 //horizontal offset of menu from default location. (0-5 is a good value)

/////No further editing needed

var ie4=document.all
var ns6=document.getElementById&&!document.all

if (ie4||ns6)
document.write('<div id="dropmenudiv" style="visibility:hidden;width: 160px" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}


function showhide(obj, e, visible, hidden, menuwidth){
if (ie4||ns6)
dropmenuobj.style.left=dropmenuobj.style.top=-500
dropmenuobj.widthobj=dropmenuobj.style
dropmenuobj.widthobj.width=menuwidth
if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
obj.visibility=visible
else if (e.type=="click")
obj.visibility=hidden
}

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x-obj.offsetWidth < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure+obj.offsetWidth
}
else{
var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move menu up?
edgeoffset=dropmenuobj.contentmeasure-obj.offsetHeight
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either? (position at top of viewable window then)
edgeoffset=dropmenuobj.y
}
}
return edgeoffset
}

function populatemenu(what){
if (ie4||ns6)
dropmenuobj.innerHTML=what.join("")
}


function dropdownmenu(obj, e, menucontents, menuwidth){
if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
clearhidemenu()
dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
populatemenu(menucontents)

if (ie4||ns6){
showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
dropmenuobj.x=getposOffset(obj, "left")
dropmenuobj.y=getposOffset(obj, "top")
// dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+obj.offsetWidth+horizontaloffset+"px"
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"

if (ie4) {
	dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge") + 40 + "px"
	}
else {
	dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge") + 18 + "px"
	}
}

return clickreturnvalue()
}

function clickreturnvalue(){
if (ie4||ns6) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie4&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function hidemenu(e){
if (typeof dropmenuobj!="undefined"){
if (ie4||ns6)
dropmenuobj.style.visibility="hidden"
}
}

function delayhidemenu(){
if (ie4||ns6)
delayhide=setTimeout("hidemenu()",disappeardelay)
}

function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)
}