/////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
//  ALTTXT V1.2
//  BY: BRIAN GOSSELIN OF SCRIPTASYLUM.COM
//  ADDED FADING EFFECT FOR IE4+ AND NS6+ ONLY AND OPTIMIZED THE CODE A BIT.
//  SCRIPT FEATURED ON DYNAMIC DRIVE (http://www.dynamicdrive.com)
//  Modifed by DD for doctype bug on Nov 13th, 2003


var dofade=true;     // ENABLES FADE-IN EFFECT FOR IE4+ AND NS6 ONLY
var center=false;     // CENTERS THE BOX UNER THE MOUSE, OTHERWISE DISPLAYS BOX TO THE RIGHT OF THE MOUSE
var centertext=false; // CENTERS THE TEXT INSIDE THE BOX. YOU CAN'T SIMPLY DO THIS VIA STYLE BECAUSE OF NS4.
                     // OTHERWISE, TEXT IS LEFT-JUSTIFIED. 
var restextpsg = 0;

var movCount = 0;
////////////////////////////// NO NEED TO EDIT BEYOND THIS POINT //////////////////////////////////////

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

var NS4 = (navigator.appName.indexOf("Netscape")>=0 && !document.getElementById)? true : false;
var IE4 = (document.all && !document.getElementById)? true : false;
var IE5 = (document.getElementById && document.all)? true : false;
var NS6 = (document.getElementById && navigator.appName.indexOf("Netscape")>=0 )? true: false;
var W3C = (document.getElementById)? true : false;
var w_y, w_x, navtxt, boxheight, boxwidth;
var ishover=false;
var isloaded=false;
var ieop=0;
var op_id=0;

function getwindowdims(){
w_y=(NS4||NS6||window.opera)? window.innerHeight : (IE5||IE4)? document.body.clientHeight : 0;
w_x=(NS4||NS6||window.opera)? window.innerWidth : (IE5||IE4)? document.body.clientWidth : 0;
if(navigator.userAgent.indexOf("Opera")!=-1)
{
	w_y=window.innerHeight; //: (IE5||IE4)? document.body.clientHeight : 0;
	w_x=window.innerWidth; //: (IE5||IE4)? document.body.clientWidth : 0;
}
}

function getboxwidth(){
if(NS4)boxwidth=(navtxt.document.width)? navtxt.document.width : navtxt.clip.width;
if(IE5||IE4)boxwidth=(navtxt.style.pixelWidth)? navtxt.style.pixelWidth : navtxt.offsetWidth;
if(NS6)boxwidth=(navtxt.style.width)? parseInt(navtxt.style.width) : parseInt(navtxt.offsetWidth);
if(navigator.userAgent.indexOf("Opera")!=-1)boxwidth=(navtxt.style.pixelWidth)? navtxt.style.pixelWidth : navtxt.offsetWidth;
}

function getboxheight(){
if(NS4)boxheight=(navtxt.document.height)? navtxt.document.height : navtxt.clip.height;
if(IE4||IE5)boxheight=(navtxt.style.pixelHeight)? navtxt.style.pixelHeight : navtxt.offsetHeight;
if(NS6)boxheight=parseInt(navtxt.offsetHeight);
if(navigator.userAgent.indexOf("Opera")!=-1)boxheight=(navtxt.style.pixelHeight)? navtxt.style.pixelHeight : navtxt.offsetHeight;

}

function movenavtxt(x,y){
if(NS4)navtxt.moveTo(x,y);
if(W3C||IE4){
navtxt.style.left=x+'px';
navtxt.style.top=y+'px';
}
if(navigator.userAgent.indexOf("Opera")!=-1)
{
	navtxt.style.left=x+'px';
	navtxt.style.top=y+'px';
}
}

function getpagescrolly(){
if(NS4||NS6)return window.pageYOffset;
if(IE5||IE4)return ietruebody().scrollTop;
}

function getpagescrollx(){
if(NS4||NS6)return window.pageXOffset;
if(IE5||IE4)return ietruebody().scrollLeft;
}

function writeindiv(text){
	if(text>0)
	{
		
		findDetails(text);
		movCount++;
		text = restextpsg;
	
	}
}

//**** END UTILITY FUNCTIONS ****//

/* Created By Prem */
function NewXMLHttpRequest()
{
	var xmlReq = false;
	// Create XMLHttpRequest object in non-Microsoft browsers
	if (window.XMLHttpRequest)
	{
		xmlReq = new XMLHttpRequest();
	}
	else if (window.ActiveXObject)
	{
		try
		{
			// Try to create XMLHttpRequest in later versions
			// of Internet Explorer
			xmlReq = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e1)
		{
				// Failed to create required ActiveXObject
			try
			{
				// Try version supported by older versions
				// of Internet Explorer
				xmlReq = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e2)
			{
				// Unable to create an XMLHttpRequest by any means
				xmlReq = false;
			}
		}
	}
	return xmlReq;
}

/*
* Returns a function that waits for the specified XMLHttpRequest
* to complete, then passes it XML response to the given handler function.
* req - The XMLHttpRequest whose state is changing
* responseXmlHandler - Function to pass the XML response to
*/
function GetReadyStateHandler(req, responseXmlHandler)
{
	// Return an anonymous function that listens to the XMLHttpRequest instance
	return function ()
	{
		// If the request's status is "complete"
		if (req.readyState == 4)
		{
		// Check that we received a successful response from the server
			if (req.status == 200)
			{
				// Pass the XML payload of the response to the handler function.
				responseXmlHandler(req.responseText ? req.responseText : req.responseXML);
			}
			else
			{
				// An HTTP problem has occurred
				//alert("HTTP error "+req.status+": "+req.statusText);
				//restextpsg = '<img src =" ../images/loading_wh.gif" width= "50px"; height="50px;"/>';
			}
		}
	}
}

function findDetails(id)
{
	url = "selectGlossary.php?gId=" + id ;
	var req = NewXMLHttpRequest();
	//restextpsg = '<img src =" ../images/loading_wh.gif" width= "50px"; height="50px;"/>';
	req.onreadystatechange = GetReadyStateHandler(req,RoomDetails);
	req.open("GET", url);
	req.send(null);
}
function RoomDetails(_var)
{
	restextpsg = _var;

	if(NS4){
		navtxt.document.open();
		navtxt.document.write(_var);
		navtxt.document.close();
		}
		if(W3C||IE4)navtxt.innerHTML=_var;
		if(navigator.userAgent.indexOf("Opera")!=-1)navtxt.innerHTML=_var;
}

function writetxt(text){
navtxt=(NS4)? document.layers['navtxt'] : (IE4)? document.all['navtxt'] : (W3C)? document.getElementById('navtxt') : null;
		  getboxwidth();
		  getboxheight();
		  getwindowdims();
		  isloaded=true;
		  
		  if((W3C || IE4) && centertext)navtxt.style.textAlign="center";
		  if(W3C)navtxt.style.padding='4px';
		  if(IE4 || IE5 && dofade)navtxt.style.filter="alpha(opacity=0)";
		  if(navigator.userAgent.indexOf("Opera")!=-1)navtxt.style.opacity=('100');
if(isloaded){
if(text!=0){
ishover=true;

if(NS4)text='<div class="navtext">'+((centertext)?'<center>':'')+text+((centertext)?'</center>':'')+'</div>';
writeindiv(text);
getboxheight();
if((W3C || IE4) && dofade){
ieop=0;
incropacity();
}}else{
if(NS4)navtxt.visibility="hide";
if(IE4||W3C){
if(dofade)clearTimeout(op_id);
navtxt.style.visibility="hidden";
}
writeindiv('');
ishover=false;
}}}

function incropacity(){
if(ieop<=100){
ieop+=7;
if(IE4 || IE5)navtxt.style.filter="alpha(opacity="+ieop+")";
if(NS6)navtxt.style.MozOpacity=ieop/100;
if(navigator.userAgent.indexOf("Opera")!=-1)navtxt.style.opacity=(ieop/100);
op_id=setTimeout('incropacity()', 50);
}}

function moveobj(evt){
if(isloaded && ishover){
margin=(IE4||IE5)? 1 : 23;
if(NS6)if(document.height+27-window.innerHeight<0)margin=15;
if(NS4)if(document.height-window.innerHeight<0)margin=10;
if(navigator.userAgent.indexOf("Opera")!=-1)if(document.height-window.innerHeight<0)margin=10;
//mx=(NS4||NS6)? evt.pageX : (IE5||IE4)? event.clientX : 0;
//my=(NS4||NS6)? evt.pageY : (IE5||IE4)? event.clientY : 0;
if (NS4){
mx=evt.pageX
my=evt.pageY
}
else if (NS6){
mx=evt.clientX
my=evt.clientY
}
else if (IE5){
mx=event.clientX
my=event.clientY
}
else if (IE4){
mx=0
my=0
}
else if(navigator.userAgent.indexOf("Opera")!=-1)
{
	mx=evt.clientX
	my=evt.clientY
}	
if(NS4){
mx-=getpagescrollx();
my-=getpagescrolly();
}
xoff=(center)? mx-boxwidth/2 : mx+5;
yoff=(my+boxheight+30-getpagescrolly()+margin>=w_y)? -15-boxheight: 30;
movenavtxt( Math.min(w_x-boxwidth-margin , Math.max(2,xoff))+getpagescrollx() , my+yoff+getpagescrolly());
if(NS4)navtxt.visibility="show";
if(W3C||IE4)navtxt.style.visibility="visible";
if(navigator.userAgent.indexOf("Opera")!=-1)navtxt.style.visibility="visible";
}}

if(NS4)document.captureEvents(Event.MOUSEMOVE);
document.onmousemove=moveobj;

window.onresize=getwindowdims;