	//=======================================================

	 //server location
	var site_root = '/workshops/tfl/';
	
	//=======================================================
	
		img1ovr = new Image();           
		img1ovr.src = site_root + "images/hm_nav_about_ovr.gif";  
		img2ovr = new Image(); 
		img2ovr.src = site_root + "images/hm_nav_broadcast_ovr.gif";  
		img3ovr = new Image(); 
		img3ovr.src = site_root + "images/hm_nav_channel_ovr.gif";  
		img4ovr = new Image(); 
		img4ovr.src = site_root + "images/hm_nav_graduate_ovr.gif";  
		img5ovr = new Image(); 
		img5ovr.src = site_root + "images/hm_nav_purchase_ovr.gif";  
		img6ovr = new Image(); 
		img6ovr.src = site_root + "images/hm_nav_registration_ovr.gif";  
		img7ovr = new Image(); 
		img7ovr.src = site_root + "images/hm_nav_sitemap_ovr.gif";  
		img8ovr = new Image(); 
		img8ovr.src = site_root + "images/hm_nav_support_ovr.gif";  		
		img8aovr = new Image(); 
		img8aovr.src = site_root + "images/hm_nav_video_ovr.gif";  		

		img9ovr = new Image(); 
		img9ovr.src = site_root + "images/hm_s1_ovr.gif";  		
		img10ovr = new Image(); 
		img10ovr.src = site_root + "images/hm_s2_ovr.gif";  		
		img11ovr = new Image(); 
		img11ovr.src = site_root + "images/hm_s3_ovr.gif";  		
		img12ovr = new Image(); 
		img12ovr.src = site_root + "images/hm_s4_ovr.gif";  		
		img13ovr = new Image(); 
		img13ovr.src = site_root + "images/hm_s5_ovr.gif";  		
		img14ovr = new Image(); 
		img14ovr.src = site_root + "images/hm_s6_ovr.gif";  		
		img15ovr = new Image(); 
		img15ovr.src = site_root + "images/hm_s7_ovr.gif";  		
		img16ovr = new Image(); 
		img16ovr.src = site_root + "images/hm_s8_ovr.gif";  

		img17ovr = new Image(); 
		img17ovr.src = site_root + "images/int_nav_intro_ovr.gif";  
		img18ovr = new Image(); 
		img18ovr.src = site_root + "images/int_nav_before_ovr.gif";  
		img19ovr = new Image(); 
		img19ovr.src = site_root + "images/int_nav_analyze_ovr.gif";  
		img20ovr = new Image(); 
		img20ovr.src = site_root + "images/int_nav_examine_ovr.gif";  
		img21ovr = new Image(); 
		img21ovr.src = site_root + "images/int_nav_practice_ovr.gif";  
		img22ovr = new Image(); 
		img22ovr.src = site_root + "images/int_nav_project_ovr.gif";  
		img23ovr = new Image(); 
		img23ovr.src = site_root + "images/int_nav_reflect_ovr.gif";  
		img24ovr = new Image(); 
		img24ovr.src = site_root + "images/int_title_ovr.gif";  

		img25ovr = new Image(); 
		img25ovr.src = site_root + "images/nav_about_ovr.gif";  
		img26ovr = new Image(); 
		img26ovr.src = site_root + "images/nav_summaries_ovr.gif";  
		img27ovr = new Image(); 
		img27ovr.src = site_root + "images/nav_using_ovr.gif";  
		img28ovr = new Image(); 
		img28ovr.src = site_root + "images/nav_research_ovr.gif";  
		img29ovr = new Image(); 
		img29ovr.src = site_root + "images/nav_standards_ovr.gif";  
		img30ovr = new Image(); 
		img30ovr.src = site_root + "images/nav_whoswho_ovr.gif";  
		img31ovr = new Image(); 
		img31ovr.src = site_root + "images/nav_tips_ovr.gif";  
		img32ovr = new Image(); 
		img32ovr.src = site_root + "images/nav_technotes_ovr.gif";  
		img33ovr = new Image(); 
		img33ovr.src = site_root + "images/nav_credits_ovr.gif";  
		
		
		
		img1off = new Image();          
		img1off.src = site_root + "images/hm_nav_about_off.gif";  
		img2off = new Image(); 
		img2off.src = site_root + "images/hm_nav_broadcast_off.gif";  
		img3off = new Image(); 
		img3off.src = site_root + "images/hm_nav_channel_off.gif";  
		img4off = new Image(); 
		img4off.src = site_root + "images/hm_nav_graduate_off.gif";  
		img5off = new Image(); 
		img5off.src = site_root + "images/hm_nav_purchase_off.gif";  
		img6off = new Image(); 
		img6off.src = site_root + "images/hm_nav_registration_off.gif";  
		img7off = new Image(); 
		img7off.src = site_root + "images/hm_nav_sitemap_off.gif";  
		img8off = new Image(); 
		img8off.src = site_root + "images/hm_nav_support_off.gif";  	
		img8aoff = new Image(); 
		img8aoff.src = site_root + "images/hm_nav_video_off.gif";  		
			

		img9off = new Image(); 
		img9off.src = site_root + "images/hm_s1_off.gif";  		
		img10off = new Image(); 
		img10off.src = site_root + "images/hm_s2_off.gif";  		
		img11off = new Image(); 
		img11off.src = site_root + "images/hm_s3_off.gif";  		
		img12off = new Image(); 
		img12off.src = site_root + "images/hm_s4_off.gif";  		
		img13off = new Image(); 
		img13off.src = site_root + "images/hm_s5_off.gif";  		
		img14off = new Image(); 
		img14off.src = site_root + "images/hm_s6_off.gif";  		
		img15off = new Image(); 
		img15off.src = site_root + "images/hm_s7_off.gif";  		
		img16off = new Image(); 
		img16off.src = site_root + "images/hm_s8_off.gif";  
		
		img17off = new Image(); 
		img17off.src = site_root + "images/int_nav_intro_off.gif";  
		img18off = new Image(); 
		img18off.src = site_root + "images/int_nav_before_off.gif";  
		img19off = new Image(); 
		img19off.src = site_root + "images/int_nav_analyze_off.gif";  
		img20off = new Image(); 
		img20off.src = site_root + "images/int_nav_examine_off.gif";  
		img21off = new Image(); 
		img21off.src = site_root + "images/int_nav_practice_off.gif";  
		img22off = new Image(); 
		img22off.src = site_root + "images/int_nav_project_off.gif";  
		img23off = new Image(); 
		img23off.src = site_root + "images/int_nav_reflect_off.gif";  
		img24off = new Image(); 
		img24off.src = site_root + "images/int_title_off.gif";  
		
		img25off = new Image(); 
		img25off.src = site_root + "images/nav_about_off.gif";  
		img26off = new Image(); 
		img26off.src = site_root + "images/nav_summaries_off.gif";  
		img27off = new Image(); 
		img27off.src = site_root + "images/nav_using_off.gif";  
		img28off = new Image(); 
		img28off.src = site_root + "images/nav_research_off.gif";  
		img29off = new Image(); 
		img29off.src = site_root + "images/nav_standards_off.gif";  
		img30off = new Image(); 
		img30off.src = site_root + "images/nav_whoswho_off.gif";  
		img31off = new Image(); 
		img31off.src = site_root + "images/nav_tips_off.gif";  
		img32off = new Image(); 
		img32off.src = site_root + "images/nav_technotes_off.gif";  
		img33off = new Image(); 
		img33off.src = site_root + "images/nav_credits_off.gif";  
		
		
		
		
		
		function imgOn(imgName) {
		        if (document.images) {
		            document[imgName].src = eval(imgName + "ovr.src");
		        }
		}

		function imgOff(imgName) {
		        if (document.images) {
		            document[imgName].src = eval(imgName + "off.src");
		        }
		}


////////////////////////////////////////////////////////
function show(id) {

		 var id = id;	
	
		 if (document.getElementById && document.getElementById(id) != null ) {
		 		 
				document.getElementById(id).style.display = 'block';			
		 }	 
	
	 	
} // end  show() 

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

function hide(id) {

		 var id = id;	
	
		 if (document.getElementById && document.getElementById(id) != null ) {
		 		 
				document.getElementById(id).style.display = 'none';			
		 }	 
	
	 	
} // end  hide() 



 ////////////////////////////////////////////////////////
	function openWin(URL,type,w,h) {
	
	var bname = navigator.appName;
	var bversion = parseInt(navigator.appVersion);
	var bplatform = navigator.platform;
	var status = 'no';
	var reSize = 'no';
	var scroll = 'no';
	var toolbar = 'no';
	var location = 'no';
	var menubar = 'no';
	var directories = 'no';
	var ewindow;
	
// use this for video pop-up	
	if (type == "ia") {
		if (!w) {
			w = 540;
		}
		if (!h) {
			h= 360;
		}
		reSize = 'yes';		
	} 	
	
	
	var windowFeatures = 'width='+w+',height='+h+
									',toolbar='+toolbar+',status='+status+
									',scrollbars='+scroll+',resizable='+reSize+
									',menubar='+menubar+
									',location='+location+
									',directories='+directories+''
									
	ewindow = window.open(URL,type,windowFeatures);   
	ewindow.focus();
}

