var ns = (document.layers)? true:false
var is = (document.all)? true:false
var ns6 = (navigator.appName.indexOf('Netscape') >= 0 && navigator.appVersion.indexOf('5.') ==0)? true:false;

// vars for dhtml dropdown menus
var gn_curr_layer = 0;
var gn_out_layer = 0;
var gn_timer_id;
var gn_timer_len = 500; // 350; // milleseconds
var gn_using_images = false;

function MM_swapImgRestore() { //v3.0
   var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_swapImgRestoreSelected(menu,smenu) { //v3.0
  // parameters for setting bold image on selected menu item
  // menu = menu js called from
  // smenu = querystring value
  // example: MM_swapImgRestoreSelected('Products','<%=Request("smenu")%>')
  if ((menu != smenu) && (menu.length != 0)){
    var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
  }
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

//dhtml drop down navs
function kill_nav_menu() {
  stop_timer();
  timeout();
  if (gn_using_images) MM_swapImgRestore();
}
function menu_in(div_id) {
	gn_curr_layer = div_id;
	show_layer(div_id);
	stop_timer();
	if (gn_curr_layer != gn_out_layer && gn_out_layer != 0) {
		if (gn_using_images) MM_swapImgRestore();
		hide_layer(gn_out_layer);
		// insert image swapping code here if necessary (used for div_id's menu trigger image)
	}
}
function menu_out(div_id) {
	gn_out_layer = div_id;
	start_timer();
}
function start_timer() {
	gn_timer_id = window.setTimeout("timeout()",gn_timer_len);
}
function stop_timer() {
	window.clearTimeout(gn_timer_id);
}
function timeout() {
	if (gn_using_images) MM_swapImgRestore();
	if (gn_out_layer != 0) {
		hide_layer(gn_out_layer);
		gn_out_layer = 0;
		// if (gn_using_images) insert image swapping code here if necessary (used for div_id's menu trigger image)
	}
}

function hide_layer(item) {
	var hidden = (ns)? "hide" : "hidden";
	if (ns6) {
		var tmp=document.getElementById(item);
		tmp.style.visibility = hidden;
	} else if (ns){
		document.layers[item].visibility = hidden;
	} else {
		eval(item + '.style.visibility = hidden');
	}
}

function show_layer(item) {
	var visibility = (ns)? "show" : "visible";
	if (ns6) {
		var tmp=document.getElementById(item);
		tmp.style.visibility = visibility;
	} else if (ns){
		document.layers[item].visibility = visibility;
	} else {
		eval(item + '.style.visibility = visibility');
	}
}

function changeClass(elementID, newClass) {
	var elementID;
	if(document.getElementById) {
		var elementID = document.getElementById(elementID);
	} else if (document.all){
		var elementID = document.all[elementID];
	}
	elementID.className = newClass;
}