var browserType = null
if( document.layers )   browserType="Netscape";
else if( document.all )	browserType="IE";
else if( document.getElementById ) browserType = "NS6";


///////////////////////////////////


function showMenu( strMenu ) {

        cancelWait(switchTimeout);

	if( browserType == "Netscape" ) {
		setMenuVisibility("document.layers[\"" + strMenu + "\"]","show")
	}
	else if( browserType == "IE" ) {
		setMenuVisibility("document.all[\"" + strMenu + "\"]","visible")
	}
	else if( browserType == "NS6" ) {
		setMenuVisibility(strMenu,'visible')
	}
}

function hideMenu( strMenu ) {

	if( browserType == "Netscape" ) {
		setMenuVisibility("document.layers[\"" + strMenu + "\"]","hide")
	}
	else if( browserType == "IE" ) {
		setMenuVisibility(document.all[strMenu],"hidden")
	}
	else if( browserType == "NS6" ) {
		setMenuVisibility(strMenu,'hidden')
	}	
}

/////////////////////////////////////

function setMenuVisibility( strMenuDiv, strNewMenuState ){
	var objMenuDiv;
	if( browserType == "Netscape")
	{
		objMenuDiv = eval(strMenuDiv);
  		if( objMenuDiv ) objMenuDiv.visibility = strNewMenuState;
	}
	else if( browserType == "IE" )
	{
		objMenuDiv=eval(strMenuDiv);
		if( objMenuDiv ) objMenuDiv.style.visibility = strNewMenuState;
	}
	else if( browserType == "NS6" )
	{
		objMenuDiv=eval("document.getElementById(\"" + strMenuDiv + "\")");
		if( objMenuDiv ){
		objMenuDiv.style.visibility = strNewMenuState;
		}
	}	
	else
	{
		return
	}
}

/////////////////////////////////////

var switchTimeout;
//wait then execute
function wait(_msecs, _menu) {
  if (switchTimeout != null) clearTimeout(switchTimeout);
  switchTimeout = setTimeout("hideMenu('" + _menu + "')",_msecs);
}

//cancel wait for a timeout
function cancelWait(_timeout) {
  if (_timeout != null || _timeout != ''){
    clearTimeout(_timeout);
    }
}

/////////////////////////////////////


 function imgOver(img, nav2){ 

   document[img].src= "images/nav/"+img+"_on.gif";
   var navimg = img+"_nav2";
   if(nav2)
     showMenu(nav2);

 }
 
 function imgOut(img, nav2){ 
   var imgsrc = document[img].src;
   if(section!=img)
     document[img].src= "images/nav/"+img+".gif";
  if(nav2)
     hideMenu(nav2);   
 }



 function getObj(){
   var oDiv = document.all
   if (document.all)
     oDiv = document.all.tags("div");
   else if (document.layers)
     oDiv = document.layers();
   else if (document.getElementById)
     oDiv = document.getElementsByTagName("div");
     
   return oDiv;
 }
 
function changeMenu (obj, newsection){
  var sec = obj.parent.section;
  obj.parent.document[sec].src= "images/nav/"+sec+".gif";
  obj.parent.section = newsection;
  obj.parent.document[newsection].src= "images/nav/"+newsection+"_on.gif";
}

var section = "home";
var onsecnav = false;