var ie45,ns6,ns4,dom = false;
if (navigator.appName == "Microsoft Internet Explorer") ie45 = parseInt(navigator.appVersion) >= 4;
else if (navigator.appName == "Netscape"){
	ns6 = parseInt(navigator.appVersion) >= 5;
	ns4 = parseInt(navigator.appVersion) < 5;}
dom = ie45 || ns6;

var switchHTML = new Array;
var openHTML = '';
var re = /<SCRIPT>/i;

function saveHTML(id, _HTML) {
	if(ns4) return;
	
	switchHTML[id] = _HTML;
	
}

function showHideHTML(id) {
	if(ns4) return;
	
	el = document.all ? document.all[id] : dom ? document.getElementById(id) : document.layers[id];
	
	if(openHTML.id == el.id)	{ el.innerHTML = "";  openHTML = ""; return; }
	else						{ openHTML.innerHTML = ""; }
	
	if(el.innerHTML == "" || re.test(el.innerHTML)) {
		el.innerHTML = switchHTML[id];
	} else {
		el.innerHTML = "";
	}
	
	openHTML = el;
	
}
	function checkIt(string)
	{
		place = detect.indexOf(string) + 1;
		thestring = string;
		return place;
	}

	var detect = navigator.userAgent.toLowerCase();
	var OS,browser,version,total,thestring;
	
	if (checkIt('konqueror')) { 
		browser = "Konqueror";
		OS = "Linux";
	} else if (checkIt('safari')) browser = "Safari" 
	else if (checkIt('omniweb')) browser = "OmniWeb"
	else if (checkIt('opera')) browser = "Opera"
	else if (checkIt('webtv')) browser = "WebTV";
	else if (checkIt('icab')) browser = "iCab"
	else if (checkIt('msie')) browser = "Internet Explorer"
	else if (!checkIt('compatible')) {
		browser = "Netscape Navigator"
		version = detect.charAt(8);
	}
	else browser = "An unknown browser";
	
	if (!version) version = detect.charAt(place + thestring.length);
	if (!OS)
	{
		if (checkIt('linux')) OS = "Linux";
		else if (checkIt('x11')) OS = "Unix";
		else if (checkIt('mac')) OS = "Mac"
		else if (checkIt('win')) OS = "Windows"
		else OS = "an unknown operating system";
	}

	isMacIE5 = ("Internet Explorer" && OS == "Mac" && parseFloat(version) >= 5);

var timerlen = 5;
var slideAniLen = 250;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

function slidedown(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display != "none")
                return; // cannot slide down something that is already visible

        moving[objname] = true;
        dir[objname] = "down";
        startslide(objname);
}

function slideup(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display == "none")
                return; // cannot slide up something that is already hidden

        moving[objname] = true;
        dir[objname] = "up";
        startslide(objname);
}

function startslide(objname){
        obj[objname] = document.getElementById(objname);

        endHeight[objname] = parseInt(obj[objname].style.height);
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "down"){
                obj[objname].style.height = "1px";
        }

        obj[objname].style.display = "block";

        timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}

function slidetick(objname){
        var elapsed = (new Date()).getTime() - startTime[objname];

        if (elapsed > slideAniLen)
                endSlide(objname)
        else {
                var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
                if(dir[objname] == "up")
                        d = endHeight[objname] - d;

                obj[objname].style.height = d + "px";
        }

        return;
}

function endSlide(objname){
        clearInterval(timerID[objname]);

        if(dir[objname] == "up")
                obj[objname].style.display = "none";

        obj[objname].style.height = endHeight[objname] + "px";

        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(obj[objname]);
        delete(dir[objname]);

        return;
}

function toggleSlide(objname){
  if(document.getElementById(objname).style.display == "none"){
    // div is hidden, so let's slide down
    slidedown(objname);
  }else{
    // div is not hidden, so slide up
    slideup(objname);
  }
}