function menu(n)
{
	switch(n)
	{
		case 1: document.getElementById('p1').src = "./images/p1a.gif";
  		break;    
		case 2: document.getElementById('p2').src = "./images/p2a.gif";
  		break;
		case 3: document.getElementById('p3').src = "./images/p3a.gif";
  		break;
		case 4: document.getElementById('p4').src = "./images/p4a.gif";
  		break;
		case 5: document.getElementById('p5').src = "./images/p5a.gif";
  		break;
	}
}

function menu2(n)
{
	switch(n)
	{
		case 1: document.getElementById('p1').src = "./images/p1.gif";
  		break;    
		case 2: document.getElementById('p2').src = "./images/p2.gif";
  		break;
		case 3: document.getElementById('p3').src = "./images/p3.gif";
  		break;
		case 4: document.getElementById('p4').src = "./images/p4.gif";
  		break;
		case 5: document.getElementById('p5').src = "./images/p5.gif";
  		break;
	}
}