// Detect if browser is Netscape 3 + or IE 4 +
	bName = navigator.appName;
	bVer = parseInt(navigator.appVersion);
    if ((bName == "Netscape" && bVer >= 3) || 
        (bName == "Microsoft Internet Explorer" && bVer >= 4)) br = "n3"; 
    else br = "n2";

    if (br== "n3") { 				

		// Preload images
	
		level2				= new Image();
		level2.src	 		= "images/level2/lib_row2_1.gif";
		
		level2_2			= new Image();
		level2_2.src 		= "images/level2/page_bg.gif";
		
		level2_3				= new Image();
		level2_3.src	 		= "images/level2/lib_row1_1.gif";
		
		level2_4			= new Image();
		level2_4.src 		= "images/level2/lib_row3_1.gif";
		
		// for the preload page
	
		top1_off	 			= new Image();
		top1_off.src			= "images/level2/top1_off.gif";
		top1_on     			= new Image();
		top1_on.src 			= "images/level2/top1_on.gif";	
		
		top2_off	 		= new Image();
		top2_off.src		= "images/level2/top2_off.gif";
		top2_on     		= new Image();
		top2_on.src 		= "images/level2/top2_on.gif";	
		
		top3_off	 		= new Image();
		top3_off.src		= "images/level2/top3_off.gif";
		top3_on     		= new Image();
		top3_on.src 		= "images/level2/top3_on.gif";	
		
		top4_off	 			= new Image();
		top4_off.src			= "images/level2/top4_off.gif";
		top4_on     			= new Image();
		top4_on.src 			= "images/level2/top4_on.gif";	
		
		top5_off	 			= new Image();
		top5_off.src			= "images/level2/top5_off.gif";
		top5_on     			= new Image();
		top5_on.src 			= "images/level2/top5_on.gif";	
		
		topsub1_off	 			= new Image();
		topsub1_off.src			= "images/level2/topsub1_off.gif";
		topsub1_on     			= new Image();
		topsub1_on.src 			= "images/level2/topsub1_on.gif";	
		
		topsub2_off	 		= new Image();
		topsub2_off.src		= "images/level2/topsub2_off.gif";
		topsub2_on     		= new Image();
		topsub2_on.src 		= "images/level2/topsub2_on.gif";	
		
		topsub3_off	 		= new Image();
		topsub3_off.src		= "images/level2/topsub3_off.gif";
		topsub3_on     		= new Image();
		topsub3_on.src 		= "images/level2/topsub3_on.gif";	
	
	
		projects1_off	 			= new Image();
		projects1_off.src			= "images/level2/projects1_off.gif";
		projects1_on     			= new Image();
		projects1_on.src 			= "images/level2/projects1_on.gif";	
		
		projects2_off	 		= new Image();
		projects2_off.src		= "images/level2/projects2_off.gif";
		projects2_on     		= new Image();
		projects2_on.src 		= "images/level2/projects2_on.gif";	
		
		projects3_off	 		= new Image();
		projects3_off.src		= "images/level2/projects3_off.gif";
		projects3_on     		= new Image();
		projects3_on.src 		= "images/level2/projects3_on.gif";	
		
		portfolio1_off	 			= new Image();
		portfolio1_off.src			= "images/level2/portfolio1_off.gif";
		portfolio1_on     			= new Image();
		portfolio1_on.src 			= "images/level2/portfolio1_on.gif";	
		
		portfolio2_off	 		= new Image();
		portfolio2_off.src		= "images/level2/portfolio2_off.gif";
		portfolio2_on     		= new Image();
		portfolio2_on.src 		= "images/level2/portfolio2_on.gif";	
		
		portfolio3_off	 		= new Image();
		portfolio3_off.src		= "images/level2/portfolio3_off.gif";
		portfolio3_on     		= new Image();
		portfolio3_on.src 		= "images/level2/portfolio3_on.gif";	
		
		portfolio4_off	 			= new Image();
		portfolio4_off.src			= "images/level2/portfolio4_off.gif";
		portfolio4_on     			= new Image();
		portfolio4_on.src 			= "images/level2/portfolio4_on.gif";	
		
		portfolio5_off	 			= new Image();
		portfolio5_off.src			= "images/level2/portfolio5_off.gif";
		portfolio5_on     			= new Image();
		portfolio5_on.src 			= "images/level2/portfolio5_on.gif";	
		
		d_build1_off	 			= new Image();
		d_build1_off.src			= "images/level2/d_build1_off.gif";
		d_build1_on     			= new Image();
		d_build1_on.src 			= "images/level2/d_build1_on.gif";	
		
		d_build2_off	 		= new Image();
		d_build2_off.src		= "images/level2/d_build2_off.gif";
		d_build2_on     		= new Image();
		d_build2_on.src 		= "images/level2/d_build2_on.gif";			
		
				
		d_build3_off	 		= new Image();
		d_build3_off.src		= "images/level2/d_build3_off.gif";
		d_build3_on     		= new Image();
		d_build3_on.src 		= "images/level2/d_build3_on.gif";
		
						
		d_build4_off	 		= new Image();
		d_build4_off.src		= "images/level2/d_build4_off.gif";
		d_build4_on     		= new Image();
		d_build4_on.src 		= "images/level2/d_build4_on.gif";

		hilltop_1_off	 			= new Image();
		hilltop_1_off.src			= "images/level2/hilltop_1_off.gif";
		hilltop_1_on     			= new Image();
		hilltop_1_on.src 			= "images/level2/hilltop_1_on.gif";	
		
		hilltop_2_off	 		= new Image();
		hilltop_2_off.src		= "images/level2/hilltop_2_off.gif";
		hilltop_2_on     		= new Image();
		hilltop_2_on.src 		= "images/level2/hilltop_2_on.gif";
		
		hilltop_3_off	 		= new Image();
		hilltop_3_off.src		= "images/level2/hilltop_3_off.gif";
		hilltop_3_on     		= new Image();
		hilltop_3_on.src 		= "images/level2/hilltop_3_on.gif";		
					
	}
		
	function imgOn(imgName){
		if (br == "n3"){
    	document[imgName].src = eval(imgName + "_on.src");
		}
	}
	function imgOff(imgName) {
    	if (br == "n3") {
		document[imgName].src = eval(imgName + "_off.src");
		}
	}	
	// -->