/////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
//  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. 


////////////////////////////// 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;
}

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);
}

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);

}

function movenavtxt(x,y){
if(NS4)navtxt.moveTo(x,y);
if(W3C||IE4){
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(NS4){
navtxt.document.open();
navtxt.document.write(text);
navtxt.document.close();
}
if(W3C||IE4)navtxt.innerHTML=text;
}

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

function hover(d, obj){

	navtxt=(NS4)? document.layers[obj] : (IE4)? document.all[obj] : (W3C)? document.getElementById(obj) : 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(isloaded)
	{
		if(d!=0){
			var text = document.getElementById(d).innerHTML;
			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 mousehover(d, obj) {

    navtxt = (NS4) ? document.layers[obj] : (IE4) ? document.all[obj] : (W3C) ? document.getElementById(obj) : 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 (isloaded) {
        if (d != 0) {
            var text = document.getElementById(d).innerHTML;
            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;
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;
//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
}

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