function clean ()
{
  if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt (0)<'5'))
  {
  window.document.b.visibility="show";
  window.document.m1.visibility="hide";
  window.document.m2.visibility="hide";
  window.document.m3.visibility="hide";
  window.document.m4.visibility="hide";
  
   window.document.m5.visibility="hide";
   window.document.m6.visibility="hide";
 // window.document.m7.visibility="hide";        
  return;
  }
 if (navigator.appVersion.charAt (0)<'5')
    {
    var layers=document.all.tags ("div");
    }
    else {
    var layers=document.getElementsByTagName("div");
    }
 layers["b"].style.visibility='visible'; 
 layers["m1"].style.visibility='hidden';
 layers["m2"].style.visibility='hidden';
 layers["m3"].style.visibility='hidden';
 layers["m4"].style.visibility='hidden';
 layers["m5"].style.visibility='hidden'; 
 layers["m6"].style.visibility='hidden';
 //layers["m7"].style.visibility='hidden';   
 return;
}

function menu (i)
{
status = i
switch(i)
 {
  case 1:
   {
    if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt(0)<'5'))
     {
      window.document.b.visibility="show";
      window.document.m1.visibility="show";
      window.document.m2.visibility="hide";
      window.document.m3.visibility="hide";
      window.document.m4.visibility="hide";
	  window.document.m5.visibility="hide";
	  window.document.m6.visibility="hide";
	//  window.document.m7.visibility="hide"; 	  
     return;
     }
    if (navigator.appVersion.charAt (0)<'5')
    {
    var layers=document.all.tags ("div");
    }
    else {
    var layers=document.getElementsByTagName("div");
    }
    layers["b"].style.visibility='visible'; 
    layers["m1"].style.visibility='visible';
    layers["m2"].style.visibility='hidden';
    layers["m3"].style.visibility='hidden';
    layers["m4"].style.visibility='hidden';
    layers["m5"].style.visibility='hidden';	
    layers["m6"].style.visibility='hidden';
    //layers["m7"].style.visibility='hidden';					
    return;
   }
  case 2:
   {
    if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt(0)<'5'))
     {
     window.document.b.visibility="show";
     window.document.m1.visibility="hide";
     window.document.m2.visibility="show";
     window.document.m3.visibility="hide";
	 window.document.m4.visibility="hide";
	 window.document.m5.visibility="hide";
	 window.document.m6.visibility="hide";
	 //window.document.m7.visibility="hide"; 	 
     return;
     }
    if (navigator.appVersion.charAt (0)<'5')
    {
    var layers=document.all.tags ("div");
    }
    else {
    var layers=document.getElementsByTagName("div");
    }
    layers["b"].style.visibility='visible';
    layers["m1"].style.visibility='hidden';
    layers["m2"].style.visibility='visible';
    layers["m3"].style.visibility='hidden';
	layers["m4"].style.visibility='hidden';
    layers["m5"].style.visibility='hidden';	
    layers["m6"].style.visibility='hidden';
    //layers["m7"].style.visibility='hidden';			
    return;
   }
  case 3:
   {
    if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt(0)<'5'))
     {
     window.document.b.visibility="show";
     window.document.m1.visibility="hide";
     window.document.m2.visibility="hide";
     window.document.m3.visibility="show";
	 window.document.m4.visibility="hide";
	 window.document.m5.visibility="hide";
	 window.document.m6.visibility="hide";
	 //window.document.m7.visibility="hide"; 	 	 
     return;
     }
    if (navigator.appVersion.charAt (0)<'5')
    {
    var layers=document.all.tags ("div");
    }
    else {
    var layers=document.getElementsByTagName("div");
    }
    layers["b"].style.visibility='visible';
    layers["m1"].style.visibility='hidden';
    layers["m2"].style.visibility='hidden';
    layers["m3"].style.visibility='visible';
	layers["m4"].style.visibility='hidden';
    layers["m5"].style.visibility='hidden';	
	layers["m6"].style.visibility='hidden';
    //layers["m7"].style.visibility='hidden';				
    return;
   }
  case 4:
   {
    if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt(0)<'5'))
     {
     window.document.b.visibility="show";
     window.document.m1.visibility="hide";
     window.document.m2.visibility="hide";
     window.document.m3.visibility="hide";
	 window.document.m4.visibility="show";
	 window.document.m5.visibility="hide";
	 window.document.m6.visibility="hide";
	 //window.document.m7.visibility="hide"; 	 	 
     return;
     }
    if (navigator.appVersion.charAt (0)<'5')
    {
    var layers=document.all.tags ("div");
    }
    else {
    var layers=document.getElementsByTagName("div");
    }
    layers["b"].style.visibility='visible';
    layers["m1"].style.visibility='hidden';
    layers["m2"].style.visibility='hidden';
    layers["m3"].style.visibility='hidden';
	layers["m4"].style.visibility='visible';
    layers["m5"].style.visibility='hidden';	
    layers["m6"].style.visibility='hidden';
    //layers["m7"].style.visibility='hidden';				
    return;
   }
  case 5:
   {
    if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt(0)<'5'))
     {
     window.document.b.visibility="show";
     window.document.m1.visibility="hide";
     window.document.m2.visibility="hide";
     window.document.m3.visibility="hide";
	 window.document.m4.visibility="hide";
	 window.document.m5.visibility="show";
	 //window.document.m6.visibility="hide";
	 //window.document.m7.visibility="hide"; 	 	 
     return;
     }
    if (navigator.appVersion.charAt (0)<'5')
    {
    var layers=document.all.tags ("div");
    }
    else {
    var layers=document.getElementsByTagName("div");
    }
    layers["b"].style.visibility='visible';
    layers["m1"].style.visibility='hidden';
    layers["m2"].style.visibility='hidden';
    layers["m3"].style.visibility='hidden';
	layers["m4"].style.visibility='hidden';
    layers["m5"].style.visibility='visible';	
    layers["m6"].style.visibility='hidden';
    //layers["m7"].style.visibility='hidden';				
    return;
   }
  case 6:
   {
    if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt(0)<'5'))
     {
     window.document.b.visibility="show";
     window.document.m1.visibility="hide";
     window.document.m2.visibility="hide";
     window.document.m3.visibility="hide";
	 window.document.m4.visibility="hide";
	 window.document.m5.visibility="hide";
	 window.document.m6.visibility="show";
	 //window.document.m7.visibility="hide"; 	 	 
     return;
     }
    if (navigator.appVersion.charAt (0)<'5')
    {
    var layers=document.all.tags ("div");
    }
    else {
    var layers=document.getElementsByTagName("div");
    }
    layers["b"].style.visibility='visible';
    layers["m1"].style.visibility='hidden';
    layers["m2"].style.visibility='hidden';
    layers["m3"].style.visibility='hidden';
	layers["m4"].style.visibility='hidden';
    layers["m5"].style.visibility='hidden';	
    layers["m6"].style.visibility='visible';
    //layers["m7"].style.visibility='hidden';				
    return;
   }
  case 7:
   {
    if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt(0)<'5'))
     {
     window.document.b.visibility="show";
     window.document.m1.visibility="hide";
     window.document.m2.visibility="hide";
     window.document.m3.visibility="hide";
	 window.document.m4.visibility="hide";
	 window.document.m5.visibility="hide";
	 window.document.m6.visibility="hide";
	 //window.document.m7.visibility="show"; 	 	 
     return;
     }
    if (navigator.appVersion.charAt (0)<'5')
    {
    var layers=document.all.tags ("div");
    }
    else {
    var layers=document.getElementsByTagName("div");
    }
    layers["b"].style.visibility='visible';
    layers["m1"].style.visibility='hidden';
    layers["m2"].style.visibility='hidden';
    layers["m3"].style.visibility='hidden';
	layers["m4"].style.visibility='hidden';
    layers["m5"].style.visibility='hidden';	
    layers["m6"].style.visibility='hidden';
    //layers["m7"].style.visibility='visible';				
    return;
   }            
 }

}