function swapMenu(elem, subNumber)
{

var deact_elem = new Array();
deact_elem[0] = "ec";
deact_elem[1] = "ms";
deact_elem[2] = "ls";
deact_elem[3] = "c";

for(i=0;i<4;i++) {
	deact = document.getElementById(deact_elem[i]);
	deact.className = "";
	}

  elem.className = "active";


var submenu = new Array();
submenu[0] = '';
submenu[1] = '<ul><li><a href="dedicated_emails.html">Dedicated emails</a></li><li><a href="algemene_mails.html">Algemene mails</a></li><li><a href="banners.html">Banners </a></li><li><a href="selectie.html">Selectiemogelijkheden</a></li><li><a href="tarieven.html">Tarieven</a></li></ul>';
submenu[2] = '';
submenu[3] = '<ul><li><a href="contact.html">Contact</a></li><li><a href="routebeschrijving.html">Routebeschrijving</a></li></ul>';
  
subm = document.getElementById("submenu");
    
subm.innerHTML = submenu[subNumber];
  
}

function showFrame() {
	var hetFrame = document.getElementById("frame");
	hetFrame.style.display='block';
}

function hideFrame() {
	var hetFrame = document.getElementById("frame");
	hetFrame.style.display='none';
}