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