var navi=navigator.appVersion.toLowerCase(); 
Browser="e3";
BrowserMO = false;
if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) Browser = "n3"; 
if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4 )) Browser = "n4";
if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 5 )) Browser = "n5";
if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )) Browser = "e4";
if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 ) && (navi.indexOf("msie 5.0")!=-1)) Browser = "e5";
if ((Browser == "n3") || (Browser == "n4") ||(Browser == "n5") || (Browser == "e4") ||(Browser == "e5")) BrowserMO = true;

var Timer = null;
var last_layer = ""; // stores last opened sub-menu id
var last_mtitle = ""; // stores last highlighted main-menu-item id


function show_layer(lay_name,mtitle)
{
	stop_timer();   // erases any delay still active to hide a submenu

        if (last_layer != "") { hide(last_layer,last_mtitle); }  // before opening a new sub-menu, hide any previously opened sub-menu

	if (Browser == "n4")  // if browser is Netscape Version 4
        	{       
 	               lay = eval("document." + lay_name);
				lay.visibility = "visible";   // make sub-menu visible
 	               tit = eval("document." + mtitle); 
				tit.className= "mainnav_clicked";  // change css style for main-menu-item where mouse is hovering over.
        	}
        	else   // for browswers like Mozilla, IE, etc.
        	{
			elm = document.getElementById(lay_name);
				elm.style.visibility = "visible";
			telm = document.getElementById(mtitle);
				telm.className = "mainnav_clicked";
        	}
	last_layer = lay_name; // store this sub-menu id for later use.
        last_mtitle = mtitle;  // store this main-menu-item id for later use.
}

function hide_layer(lay_name,mtitle)
{
        Timer = setTimeout('hide(last_layer,last_mtitle)',400);
}


function hide(lay_name,mtitle)
{
        
        if (Browser == "n4") 
        {
                lay = eval("document." + lay_name); 
		        lay.visibility = "hidden";
		tit = eval("document." + mtitle); 
			tit.className= "mainnav";
        }
        else
        {     
		elm = document.getElementById(lay_name);
				elm.style.visibility = "hidden";
			telm = document.getElementById(mtitle);
				telm.className = "mainnav";
        }
}

function stop_timer()
{
	clearTimeout(Timer);
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);