function toggleBox(menu)
{
    if(document.layers)	   //NN4+
    {
	   currStato = document.layers[menu].display;
	   Stato = (currStato == "block" ? "none" : "block");        
       document.layers[menu].display = Stato;
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        for(k=0;k<3;k++) {
	        var currDiv = "menu" + k;
	    	var obj = document.getElementById(currDiv);    
	    	obj.style.display = "none";
        }
	    var obj = document.getElementById(menu);
	    currStato = obj.style.display;
	    Stato = (currStato == "block" ? "none" : "block");        
        obj.style.display = Stato;
    }
    else if(document.all)	// IE 4
    {
		currStato = document.all[menu].style.display;
		Stato = (currStato == "block" ? "none" : "block");        
        document.all[menu].style.display = Stato;
    }
}



function toggleBox2(coll)
{
    if(document.layers)	   //NN4+
    {
	   currStato = document.layers[coll].display;
	   Stato = (currStato == "block" ? "none" : "block");        
       document.layers[coll].display = Stato;
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        for(k=0;k<11;k++) {
	        var currDiv = "coll" + k;
	    	var obj = document.getElementById(currDiv);    
	    	obj.style.display = "none";
        }
	    var obj = document.getElementById(coll);
	    currStato = obj.style.display;
	    Stato = (currStato == "block" ? "none" : "block");        
        obj.style.display = Stato;
    }
    else if(document.all)	// IE 4
    {
		currStato = document.all[coll].style.display;
		Stato = (currStato == "block" ? "none" : "block");        
        document.all[coll].style.display = Stato;
    }
}

function toggleBox3(prof)
{
    if(document.layers)	   //NN4+
    {
	   currStato = document.layers[prof].display;
	   Stato = (currStato == "block" ? "none" : "block");        
       document.layers[prof].display = Stato;
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        for(k=0;k<10;k++) {
	        var currDiv = "prof" + k;
	    	var obj = document.getElementById(currDiv);    
	    	obj.style.display = "none";
        }
	    var obj = document.getElementById(prof);
	    currStato = obj.style.display;
	    Stato = (currStato == "block" ? "none" : "block");        
        obj.style.display = Stato;
    }
    else if(document.all)	// IE 4
    {
		currStato = document.all[prof].style.display;
		Stato = (currStato == "block" ? "none" : "block");        
        document.all[prof].style.display = Stato;
    }
}