browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName ==  "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))
var CurrSubMenu;		// selected submenu image
var CurrImage;			// selected main menu image
var SubDir;

SubDir = "";


// Check if we are running from within scripts folder, in which case
// need to re-route paths
var sPath = window.location.pathname;


//parent.menuheader.document.images['home'].src = "images/menu/contact_0.gif";



// off images
  home_0 = new Image(207,17);
  home_0.src=SubDir+"images/menu/home_0.gif";
  about_0 = new Image(156,17);
  about_0.src=SubDir+"images/menu/about_0.gif";
  products_0 = new Image(66,17);
  products_0.src=SubDir+"images/menu/products_0.gif";
  research_0 = new Image(135,17);
  research_0.src=SubDir+"images/menu/research_0.gif";
  contact_0 = new Image(135,17);
  contact_0.src=SubDir+"images/menu/contact_0.gif";  
    
  // on images
  
  home_1 = new Image(207,17);
  home_1.src=SubDir+"images/menu/home_1.gif";
  about_1 = new Image(156,17);
  about_1.src=SubDir+"images/menu/about_1.gif";
  products_1 = new Image(66,17);
  products_1.src=SubDir+"images/menu/products_1.gif";
  research_1 = new Image(135,17);
  research_1.src=SubDir+"images/menu/research_1.gif";
  contact_1 = new Image(135,17);
  contact_1.src=SubDir+"images/menu/contact_1.gif";
  
  


var sPage = sPath.substring(sPath.lastIndexOf('/') + 1);
sPage = (sPage.substring(sPage.lastIndexOf('.') +1));


//if(sPage=="php")
//	SubDir="../";

//if(sPath.indexOf("employee")!=-1)
//	SubDir="../";



  
  

function imgchg(imgst,imgName) 
{
	 if(imgName!=CurrImage && imgName!=CurrSubMenu)
	 {
		 imgc = eval(imgName + "_" + imgst + ".src");
		 if(document[imgName].src != imgc) 
		 {
     			document   [imgName].src = imgc;
		 }
	 }
	 //alert("changed");
}

function SetSubDir()
{
	SubDir="../";
}	

function ShowCurrSub(currMenu)
{
	var MainPageSrc = top.submenu.location.href;
	MainPageSrc = MainPageSrc.substring(MainPageSrc.lastIndexOf('/') + 1);
	switch(currMenu)
	{
		case "home":
			if(MainPageSrc != "blanksubnav.html")
				parent.frames[2].location = "homesubnav.html";
			
			break;
		case "about":
			if(MainPageSrc != "aboutsubnav.html")
				parent.frames[2].location = "aboutsubnav.html";
			break;
		case "products":
			if(MainPageSrc != "productssubnav.html")
				parent.frames[2].location = "productssubnav.html";
			break;
		case "research":
			if(MainPageSrc != "researchsubnav.html")
				parent.frames[2].location = "researchsubnav.html";
			break;
		case "contact":
			if(MainPageSrc != "blanksubnav.html")
				parent.frames[2].location = "contactsubnav.html";
			break;			
	}
}


function ProcessMenu()
{
	var MainPageSrc = top.submenu.location.href;
	MainPageSrc = MainPageSrc.substring(MainPageSrc.lastIndexOf('/') + 1);
	switch(MainPageSrc)
	{
		case "homesubnav.html":
			imgchg(1, "home");
			CurrImage = "home";			
			break;
		case "aboutsubnav.html":
			imgchg(1, "about");
			CurrImage = "about";
			break;
		case "productsubnav.html":
			imgchg(1, "products");
			CurrImage = "products";			
			break;
		case "researchsubnav.html":
			imgchg(1, "research");
			CurrImage = "research";			
			break;
		case "contactsubnav.html":
			imgchg(1, "contact");
			CurrImage = "contact";			
			break;					
		default:
			imgchg(1, "home");
			CurrImage = "home";
			break;
	}
	

}