function getAppVersion() { 
	appname = navigator.appName; 
	appversion = navigator.appVersion
    majorver = appversion.substring(0, 1); 

	if((appname =="Netscape") && (majorver >= 3)) 
	   return 1; 

	if ((appname == "Microsoft Internet Explorer") && (majorver >= 4))
	   return 1; 

    return 0; 
	}
  
	temp_arr = new Array(); 
	temp_arr[0] = prefix + "images/home_off.gif"
	temp_arr[1] = prefix + "images/home_on.gif"
	temp_arr[2] = prefix + "images/apps_off.gif"
	temp_arr[3] = prefix + "images/apps_on.gif"
	temp_arr[4] = prefix + "images/tech_off.gif"
	temp_arr[5] = prefix + "images/tech_on.gif"
	temp_arr[6] = prefix + "images/screentip_off.gif"
	temp_arr[7] = prefix + "images/screentip_on.gif"
	temp_arr[8] = prefix + "images/materials_off.gif"
	temp_arr[9] = prefix + "images/materials_on.gif"
	temp_arr[10] = prefix + "images/vibro_off.gif"
	temp_arr[11] = prefix + "images/vibro_on.gif"
	temp_arr[12] = prefix + "images/centri_off.gif"
	temp_arr[13] = prefix + "images/centri_on.gif"
	temp_arr[14] = prefix + "images/fluid_off.gif"
	temp_arr[15] = prefix + "images/fluid_on.gif"
	temp_arr[16] = prefix + "images/static_off.gif"
	temp_arr[17] = prefix + "images/static_on.gif"
	temp_arr[18] = prefix + "images/specialized_off.gif"
	temp_arr[19] = prefix + "images/specialized_on.gif"
	temp_arr[20] = prefix + "images/new_off.gif"
	temp_arr[21] = prefix + "images/new_on.gif"
	temp_arr[22] = prefix + "images/safety_off.gif"
	temp_arr[23] = prefix + "images/safety_on.gif"
	temp_arr[24] = prefix + "images/world_off.gif"
	temp_arr[25] = prefix + "images/world_on.gif"
	temp_arr[26] = prefix + "images/contact_off.gif"
	temp_arr[27] = prefix + "images/contact_on.gif"
	temp_arr[28] = prefix + "images/trade_off.gif"
	temp_arr[29] = prefix + "images/trade_on.gif"
	
	var i = 0; 
	var off_img, on_img; 
	off_img = new Array(); 
	var off_count = 0;
	on_img = new Array();
	var on_count = 0; 
	
	for(i = 0; i < temp_arr.length; i++)
	 { 
	  if(temp_arr[i].search('_off') != -1)
	   {
		   off_img[off_count] = new Image();
		   off_img[off_count++].src = temp_arr[i];
	   }
	   if(temp_arr[i].search('_on') != -1)
	   {
		   on_img[on_count] = new Image();
		   on_img[on_count++].src = temp_arr[i];
	   }

	 } 
	 
	function turn_on(img_name, inx) 
	 {  
	 if(document[img_name].src.search('_off') >= 0) 
		document[img_name].src = on_img[inx].src; 
	 } 


	function turn_off(img_name, inx) 
	 { 
	 if(document[img_name].src.search('_on') >= 0)
	   document[img_name].src = off_img[inx].src; 
	 } 
	 
  var page
  var last
  last = document.URL.lastIndexOf("/")
  if(last != (document.URL.length - 1))
   {
    page = document.URL.substring(document.URL.lastIndexOf("/",(last-1))+1, last);
	page = page.toLowerCase();
   }
  else 
    {
	page = "default";
	}
	
	function makeActive()
	{
	  if(document[page])
	     {
		 var actImg; 
		 actImg = new Image();
		 actImg.src = prefix + "images/" + page + "_active.gif";
		 document[page].src = actImg.src;
		 
		 }
	
	}