function pokaz1 (){            

document.getElementById('a').className='menu-element-1'
document.getElementById('b').className='menu-element-2'
document.getElementById('c').className='menu-element-3'       
document.getElementById('podmenu1').className='podmenu-srodek'       
document.getElementById('podmenu2').className='podmenu-srodekoff'       
document.getElementById('podmenu3').className='podmenu-srodekoff'       
document.getElementById('podmenu4').className='podmenu-srodekoff'       
document.getElementById('podmenu5').className='podmenu-srodekoff'       
document.getElementById('podmenu6').className='podmenu-srodekoff'               
}

function ukryj1 (){            

document.getElementById('a').className='menu-element-11'
document.getElementById('b').className='menu-element-22'
document.getElementById('c').className='menu-element-33'
 
}

function pokaz2 (){            

document.getElementById('d').className='menu-element-1'
document.getElementById('e').className='menu-element-2'
document.getElementById('f').className='menu-element-3'  
document.getElementById('podmenu1').className='podmenu-srodekoff'       
document.getElementById('podmenu2').className='podmenu-srodek'       
document.getElementById('podmenu3').className='podmenu-srodekoff'       
document.getElementById('podmenu4').className='podmenu-srodekoff'       
document.getElementById('podmenu5').className='podmenu-srodekoff'       
document.getElementById('podmenu6').className='podmenu-srodekoff'                  
}
function ukryj2 (){            

document.getElementById('d').className='menu-element-11'
document.getElementById('e').className='menu-element-22'
document.getElementById('f').className='menu-element-33'  

 
}

function pokaz3 (){            

document.getElementById('g').className='menu-element-1'
document.getElementById('h').className='menu-element-2'
document.getElementById('i').className='menu-element-3'    
document.getElementById('podmenu1').className='podmenu-srodekoff'       
document.getElementById('podmenu2').className='podmenu-srodekoff'       
document.getElementById('podmenu3').className='podmenu-srodek'       
document.getElementById('podmenu4').className='podmenu-srodekoff'       
document.getElementById('podmenu5').className='podmenu-srodekoff'       
document.getElementById('podmenu6').className='podmenu-srodekoff'                
}

function ukryj3 (){            

document.getElementById('g').className='menu-element-11'
document.getElementById('h').className='menu-element-22'
document.getElementById('i').className='menu-element-33'  
 
}

function pokaz4 (){            

document.getElementById('j').className='menu-element-1'
document.getElementById('k').className='menu-element-2'
document.getElementById('l').className='menu-element-3'    
document.getElementById('podmenu1').className='podmenu-srodekoff'       
document.getElementById('podmenu2').className='podmenu-srodekoff'       
document.getElementById('podmenu3').className='podmenu-srodekoff'       
document.getElementById('podmenu4').className='podmenu-srodek'       
document.getElementById('podmenu5').className='podmenu-srodekoff'       
document.getElementById('podmenu6').className='podmenu-srodekoff'                
}

function ukryj4 (){            

document.getElementById('j').className='menu-element-11'
document.getElementById('k').className='menu-element-22'
document.getElementById('l').className='menu-element-33'  
 
}

function pokaz5 (){            

document.getElementById('m').className='menu-element-1'
document.getElementById('n').className='menu-element-2'
document.getElementById('o').className='menu-element-3'       
document.getElementById('podmenu1').className='podmenu-srodekoff'       
document.getElementById('podmenu2').className='podmenu-srodekoff'       
document.getElementById('podmenu3').className='podmenu-srodekoff'       
document.getElementById('podmenu4').className='podmenu-srodekoff'       
document.getElementById('podmenu5').className='podmenu-srodek'       
document.getElementById('podmenu6').className='podmenu-srodekoff'             
}

function ukryj5 (){            

document.getElementById('m').className='menu-element-11'
document.getElementById('n').className='menu-element-22'
document.getElementById('o').className='menu-element-33'  
 
}

function pokaz6 (){            

document.getElementById('u').className='menu-element-1'
document.getElementById('p').className='menu-element-2'
document.getElementById('q').className='menu-element-3'        
document.getElementById('podmenu1').className='podmenu-srodekoff'       
document.getElementById('podmenu2').className='podmenu-srodekoff'       
document.getElementById('podmenu3').className='podmenu-srodekoff'       
document.getElementById('podmenu4').className='podmenu-srodekoff'       
document.getElementById('podmenu5').className='podmenu-srodekoff'       
document.getElementById('podmenu6').className='podmenu-srodek'            
}

function ukryj6 (){            

document.getElementById('u').className='menu-element-11'
document.getElementById('p').className='menu-element-22'
document.getElementById('q').className='menu-element-33'  
 
}





var widoczna = 0; // 2
function coZrobic (warstwa, alink) { // 3

if (widoczna == 1) ukryj (warstwa);
else pokaz (warstwa);
}
function ukryj (warstwa) { // 4
document.getElementById([warstwa]).style.display = "none"; 
widoczna = 0;
}
function pokaz (warstwa) { // 5
document.getElementById([warstwa]).style.display = "block";

widoczna = 1;
}