//Rich HTML Balloon Tooltip: http://www.dynamicdrive.com/dynamicindex5/balloontooltip.htm
//Created: September 10th, 2006

var disappeardelay=100  //tooltip disappear delay (in miliseconds)
var verticaloffset=0 //vertical offset of tooltip from anchor link, if any
var enablearrowhead=1 //0 or 1, to disable or enable the arrow image
var arrowheadimg="img/arrow2.gif" //path to down and up arrow images
var arrowheadheight=15 //height of arrow image (amount to reveal)
var arrowheadwidth=15

/////No further editting needed

var ie=document.all
var ns6=document.getElementById&&!document.all
verticaloffset=(enablearrowhead)? verticaloffset + arrowheadheight : verticaloffset

function getposOffset(what, offsettype){
 var totaloffset=(offsettype=="left")? what.offsetLeft + what.offsetWidth/2 : 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){
 dropmenuobj.style.left=dropmenuobj.style.top="-500px"
 if (e.type=="mouseover")
  obj.visibility="visible"
}

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

function clearbrowseredge(obj, whichedge){
 if (whichedge=="rightedge"){
  edgeoffsetx=0
  var windowedge=ie && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
  dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
  if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
   edgeoffsetx=dropmenuobj.contentmeasure-obj.offsetWidth
  return edgeoffsetx

 }else{
  edgeoffsety=0
  var topedge=ie && !window.opera? iecompattest().scrollTop : window.pageYOffset
  var windowedge=ie && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
  dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
  //if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure) //move up?
  //edgeoffsety=dropmenuobj.contentmeasure+obj.offsetHeight+(verticaloffset*2)
  return edgeoffsety
 }
}

function displayballoontip(obj, e){ //main ballooon tooltip function
 if (window.event) event.cancelBubble=true
 else if (e.stopPropagation) e.stopPropagation()

 if (typeof dropmenuobj!="undefined") //hide previous tooltip?
  dropmenuobj.style.visibility="hidden"

 clearhidemenu()
 //obj.onmouseout=delayhidemenu
 dropmenuobj=document.getElementById(obj.getAttribute("rel"))
 showhide(dropmenuobj.style, e)
 dropmenuobj.x=getposOffset(obj, "left")
 dropmenuobj.y=getposOffset(obj, "top") + verticaloffset
 dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
 dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
 if (enablearrowhead)
  displaytiparrow()
}

function displaytiparrow(){ //function to display optional arrow image associated with tooltip
 tiparrow=document.getElementById("arrowhead")
 tiparrow.src=arrowheadimg
 var ieshadowwidth=(dropmenuobj.filters && dropmenuobj.filters[0])? dropmenuobj.filters[0].Strength-1 : 0
 //modify "left" value depending on whether there's no room on right edge of browser to display it, respectively
 tiparrow.style.left=(edgeoffsetx!=0)? parseInt(dropmenuobj.style.left)+dropmenuobj.offsetWidth-tiparrow.offsetWidth-10+"px" : parseInt(dropmenuobj.style.left)+5+"px"
 //modify "top" value depending on whether there's no room on right edge of browser to display it, respectively
 tiparrow.style.top=(edgeoffsety!=0)? parseInt(dropmenuobj.style.top)+dropmenuobj.offsetHeight-tiparrow.offsetHeight-ieshadowwidth+arrowheadheight+"px" : parseInt(dropmenuobj.style.top)-arrowheadheight+1+"px"
 tiparrow.style.visibility="visible"
}

function delayhidemenu(){
 delayhide=setTimeout("dropmenuobj.style.visibility='hidden'; dropmenuobj.style.left=0; if (enablearrowhead) tiparrow.style.visibility='hidden'", disappeardelay)
}

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

function reltoelement(linkobj){ //tests if a link has "rel" defined and it's the ID of an element on page
 var relvalue=linkobj.getAttribute("rel")
 return (relvalue!=null && relvalue!="" && document.getElementById(relvalue)!=null && document.getElementById(relvalue).className=="balloonstyle")? true : false
}

function initalizetooltip(){
 var all_links=document.getElementsByTagName("a")
 if (enablearrowhead){
  tiparrow=document.createElement("img")
  tiparrow.setAttribute("src", arrowheadimg)
  tiparrow.setAttribute("id", "arrowhead")
  tiparrow.setAttribute("width", arrowheadwidth)
  tiparrow.setAttribute("height", arrowheadheight)
  document.body.appendChild(tiparrow)
 }
 for (var i=0; i<all_links.length; i++){
  if (reltoelement(all_links[i])){ //if link has "rel" defined and it's the ID of an element on page
   all_links[i].onmouseover=function(e){
    var evtobj=window.event? window.event : e
    displayballoontip(this, evtobj)
   }
   all_links[i].onmouseout=delayhidemenu
  }
 }
}

if (window.addEventListener)
window.addEventListener("load", initalizetooltip, false)
else if (window.attachEvent)
window.attachEvent("onload", initalizetooltip)
else if (document.getElementById)
window.onload=initalizetooltip