browserVer = parseInt(navigator.appVersion);
               if (browserVer >= 3) version ="n3";
               else version = "n2";
               
               if (version == "n3") {
               Menu1on = new Image(170, 25 );
               Menu1on.src="imagens/Menu01on.jpg";     
               Menu2on = new Image(170, 25 );
               Menu2on.src="imagens/Menu02on.jpg";  
	       Menu3on = new Image(170, 25 );
               Menu3on.src="imagens/Menu03on.jpg";    
	       Menu4on = new Image(170, 25 );
               Menu4on.src="imagens/Menu04on.jpg";  
	       Menu5on = new Image(170, 25 );
               Menu5on.src="imagens/Menu05on.jpg";
               Menu6on = new Image(170, 25 );
               Menu6on.src="imagens/Menu06on.jpg";     
               Menu7on = new Image(170, 25 );
               Menu7on.src="imagens/Menu07on.jpg";  
	       Menu8on = new Image(170, 25 );
               Menu8on.src="imagens/Menu08on.jpg";    
	       Menu9on = new Image(170, 25 );
               Menu9on.src="imagens/Menu09on.jpg";  
	       Menu10on = new Image(170, 25 );
               Menu10on.src="imagens/Menu10on.jpg";    

	       Menu1off = new Image(170, 25 );
               Menu1off.src="imagens/Menu01off.jpg";     
	       Menu2off = new Image(170, 25 );
               Menu2off.src="imagens/Menu02off.jpg";     
	       Menu3off = new Image(170, 25 );
               Menu3off.src="imagens/Menu03off.jpg";    
	       Menu4off = new Image(170, 25 );
               Menu4off.src="imagens/Menu04off.jpg";     
	       Menu5off = new Image(170, 25 );
               Menu5off.src="imagens/Menu05off.jpg";
	       Menu6off = new Image(170, 25 );
               Menu6off.src="imagens/Menu06off.jpg";     
	       Menu7off = new Image(170, 25 );
               Menu7off.src="imagens/Menu07off.jpg";     
	       Menu8off = new Image(170, 25 );
               Menu8off.src="imagens/Menu08off.jpg";    
	       Menu9off = new Image(170, 25 );
               Menu9off.src="imagens/Menu09off.jpg";     
	       Menu10off = new Image(170, 25 );
               Menu10off.src="imagens/Menu10off.jpg";   

		        }

       function img_act(imgName) {
               if (version == "n3") {
               document [imgName].src = eval(imgName + "on.src");
               }
       }

       function img_inact(imgName) {
               if (version == "n3") {
               document [imgName].src = eval(imgName + "off.src");;
               }
       }