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<html>
<head>
<script type="text/javascript">

/***********************************************
* Contractible Headers script- Dynamic Drive (www.dynamicdrive.com)
* This notice must stay intact for legal use. Last updated Oct 21st, 2003.
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

var enablepersist="on" //Enable saving state of content structure using session cookies? (on/off)
var collapseprevious="yes" //Collapse previously open content when opening present? (yes/no)

if (document.getElementById){
document.write('<style type="text/css">')
document.write('.switchcontent{display:none;}')
document.write('</style>')
}

function getElementbyClass(classname){
ccollect=new Array()
var inc=0
var alltags=document.all? document.all : document.getElementsByTagName("*")
for (i=0; i<alltags.length; i++){
if (alltags[i].className==classname)
ccollect[inc++]=alltags[i]
}
}

function contractcontent(omit){
var inc=0
while (ccollect[inc]){
if (ccollect[inc].id!=omit)
ccollect[inc].style.display="none"
inc++
}
}

function expandcontent(cid){
if (typeof ccollect!="undefined"){
if (collapseprevious=="yes")
contractcontent(cid)
document.getElementById(cid).style.display=(document.getElementById(cid).style.display!="block")? "block" : "none"
}
}

function revivecontent(){
contractcontent("omitnothing")
selectedItem=getselectedItem()
selectedComponents=selectedItem.split("|")
for (i=0; i<selectedComponents.length-1; i++)
document.getElementById(selectedComponents[i]).style.display="block"
}

function get_cookie(Name) { 
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) { 
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1) end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}

function getselectedItem(){
if (get_cookie(window.location.pathname) != ""){
selectedItem=get_cookie(window.location.pathname)
return selectedItem
}
else
return ""
}

function saveswitchstate(){
var inc=0, selectedItem=""
while (ccollect[inc]){
if (ccollect[inc].style.display=="block")
selectedItem+=ccollect[inc].id+"|"
inc++
}

document.cookie=window.location.pathname+"="+selectedItem
}

function do_onload(){
getElementbyClass("switchcontent")
if (enablepersist=="on" && typeof ccollect!="undefined")
revivecontent()
}


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

if (enablepersist=="on" && document.getElementById)
window.onunload=saveswitchstate

</script>
</head>

<body>
<h3 onClick="expandcontent('sc1')" style="cursor:hand; cursor:pointer">What is JavaScript?</h3>
<div id="sc1" class="switchcontent">
JavaScript is a scripting language originally developed by Netscape to add interactivity and power to web documents. It is purely client side, and runs completely on the client's browser and computer.
</div>

<h3 onClick="expandcontent('sc2')" style="cursor:hand; cursor:pointer">Difference betwen Java & JavaScript?</h3>
<div id="sc2" class="switchcontent">
Java is completely different from JavaScript- the former is a compiled language while the later is a scripting language.
</div>

<h3 onClick="expandcontent('sc3')" style="cursor:hand; cursor:pointer">What is DHTML?</h3>
<div id="sc3" class="switchcontent">
DHTML is the embodiment of a combination of technologies- JavaScript, CSS, and HTML. Through them a new level of interactivity is possible for the end user experience.
</div>
</body>
</html>