var nav,ns4;
var agt=navigator.userAgent.toLowerCase();
var ie  = (agt.indexOf("msie") != -1);
var ns  = (navigator.appName.indexOf("Netscape") != -1);
var win = ((agt.indexOf("win")!=-1) || (agt.indexOf("32bit")!=-1));
var mac = (agt.indexOf("mac")!=-1);
var timecounter=0,timestamp=0;
	
if(navigator.appName.indexOf("Netscape")>=0){
	nav=true;
	if((parseFloat(navigator.appVersion)>=4)&&(parseFloat(navigator.appVersion)<5)){
		ns4=true;
	}
}

function swapImgRestore() {
	var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function swapTopImgRestore() {
	var i,x,a=document.srt; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function preloadImages(arg) {
	var d=document;
	if(d.images){
		if(!d.p) d.p=new Array();
		var i,j=d.p.length,a=preloadImages.arguments;
		for(i=0; i<a.length; i++){
			if (a[i].indexOf("#")!=0){
				 d.p[j]=new Image(); 
				 d.p[j++].src=a[i];
			}
		}
	}
}

//rollovers to be precached...
preloadImages('/images/spacer.gif');
//preloadImages('images/signin_hl.jpg');
//	preloadImages('images/download_hl.jpg');

function findObj(n, d) {
	var p,i,x;
	if(!d) d=document;
	if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document;
		n=n.substring(0,p);
	}
	if(!(x=d[n])&&d.all) x=d.all[n];
	for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
	return x;
}

function swapImageTop() {
	var i,j=0,x,a=swapImageTop.arguments;
	document.srt=new Array;
	for(i=0;i<(a.length-2);i+=3)
	if ((x=findObj(a[i]))!=null){
		document.srt[j++]=x;
		if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];
	}
}

function swapImage() {
	var i,j=0,x,a=swapImage.arguments;
	document.sr=new Array;
	for(i=0;i<(a.length-2);i+=3)
	if ((x=findObj(a[i]))!=null){
		document.sr[j++]=x;
		if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];
	}
}

//Here's the DROPDOWN MENU functions called from the top MOUSEOVERS***************************************************

//START THE MENU LOOP TO TIMEOUT SUBS
setInterval('menuloop()', 300);

function dropdown1(){

	//Hide menu DIV
	killsubs();
	//Reset timer
	timestamp=0;

	//show menu DIV
		if(ns4){
			document.menuaa.visibility="show";
		}else if(nav){
			document.getElementById("menuaa").style.visibility="visible";
		}else{
			document.all["menuaa"].style.visibility="visible";
		}
}
function dropdown2(){

	//Hide menu DIV
	killsubs();
	//Reset timer
	timestamp=0;
	
	//show menu DIV
		if(ns4){
			document.menua.visibility="show";
		}else if(nav){
			document.getElementById("menua").style.visibility="visible";
		}else{
			document.all["menua"].style.visibility="visible";
		}
}
function dropdown3(){
	//Hide menu DIV
	killsubs();
	//Reset timer
	timestamp=0;
	
	//show menu DIV
		if(ns4){
			document.menub.visibility="show";
		}else if(nav){
			document.getElementById("menuc").style.visibility="visible";
		}else{
			document.all["menuc"].style.visibility="visible";
		}
}
function dropdown4(){

	//Hide menu DIV
	killsubs();
	//Reset timer
	timestamp=0;
	
	//show menu DIV
		if(ns4){
			document.menuc.visibility="show";
		}else if(nav){
			document.getElementById("menud").style.visibility="visible";
		}else{
			document.all["menud"].style.visibility="visible";
		}
}
function dropdown5(){

	//Hide menu DIV
	killsubs();
	//Reset timer
	timestamp=0;
	
	//show menu DIV
		if(ns4){
			document.menud.visibility="show";
		}else if(nav){
			document.getElementById("menud").style.visibility="visible";
		}else{
			document.all["menud"].style.visibility="visible";
		}
}

//Here's the functions to hide the MENUS***************************************************
function killsubs(){

		//swapTopImgRestore();
		timestamp=0;
		
		if(ns4){
			document.menuaa.visibility="hide";
			document.menua.visibility="hide";
			//document.menub.visibility="hide";
			document.menuc.visibility="hide";
			document.menud.visibility="hide";
		}else if(nav){
			document.getElementById("menuaa").style.visibility="hidden";
			document.getElementById("menua").style.visibility="hidden";
			//document.getElementById("menub").style.visibility="hidden";
			document.getElementById("menuc").style.visibility="hidden";
			document.getElementById("menud").style.visibility="hidden";
		}else{
			document.all["menuaa"].style.visibility="hidden";
			document.all["menua"].style.visibility="hidden";
			//document.all["menub"].style.visibility="hidden";
			document.all["menuc"].style.visibility="hidden";
			document.all["menud"].style.visibility="hidden";
		}
}

function menuloop(){
	timecounter++;
	if(timestamp && timestamp < timecounter){
		killsubs();
	}
}
function onsub(){
	timestamp = 0;
}
function outsub(){
		if(ns4){
			timestamp = timecounter + 3;
		}else {
			timestamp = timecounter + 1;
		}
}