//Rich HTML Balloon Tooltip: http://www.dynamicdrive.com/dynamicindex5/balloontooltip.htm

//Created: September 10th, 2006


var disappeardelay=250  //tooltip disappear delay (in miliseconds)

var verticaloffset=0 //vertical offset of tooltip from anchor link, if any

var enablearrowhead=0  //0 or 1, to disable or enable the arrow image

var arrowheadimg=["arrowdown.gif", "arrowup.gif"] //path to down and up arrow images

var arrowheadheight=11 //height of arrow image (amount to reveal)



/////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.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=(edgeoffsety!=0)? arrowheadimg[0] : arrowheadimg[1]

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+"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[0])

tiparrow.setAttribute("id", "arrowhead")

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