function submitenter(myfield,e)
	{ 
		var keycode;
		if(e.type == "click")
		{
			keycode = 13;
		}
		else
		{
			if (window.event)
			{
				keycode = window.event.keyCode;
			}
			else if (e)
			{
				keycode = e.which;
			}
			else
			{
				return true;
			}
		}
		if (keycode == 13)
		{
		   var email = document.getElementById('txtEmailAdress').value;
		   
		   // check valid email adress 
		   	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
			if (filter.test(email))
			{
				var websiteID = "0625061504124";
				var groepID = "0625061960118";
				var referer = window.document.location.toString();
				var email2 = email.replace(".", "$");
				var i = 0;
				
				do
				{
				  i = email2.indexOf(".");
				  email2 = email2.replace(".", "$");
				} while(i > -1)
				
				if (myfield.name == "btnUnsubscribe")
				{
					window.location.href="http://secure.mymailmarket.be/subscribers/unsubscribe/" + email2 + "/" + groepID + ".anms";
					show('anmOk');
					hide('anmUOk');
					hide('anmUNok');
					hide('anmInvalid');
				}
				else
				{
					window.location.href="http://secure.mymailmarket.be/subscribers/subscribe/" + email2 + "/" + groepID + ".anms";
					show('anmOk');
					hide('anmUOk');
					hide('anmUNok');
					hide('anmInvalid');
				}
			}
	        else show('anmInvalid');
		}
	}
	
	var state = 'none';

	function show(layer_ref)
	{
		state = 'block';
		
		if (document.all) 
		{
			//IS IE 4 or 5 (or 6 beta)
			eval( "document.all." + layer_ref + ".style.display = state");
		}
		
		if (document.layers)
		{
			//IS NETSCAPE 4 or below
			document.layers[layer_ref].display = state;
		}
		
		if (document.getElementById)
		{
		    if(!document.all)
		    {
			    hza = document.getElementById(layer_ref);
			    hza.style.display = state;
			}
		}
	}
	
	function hide(layer_ref)
	{
		state = 'none';
		
		if (document.all) 
		{
			//IS IE 4 or 5 (or 6 beta)
			eval( "document.all." + layer_ref + ".style.display = state");
		}
		
		if (document.layers)
		{
			//IS NETSCAPE 4 or below
			document.layers[layer_ref].display = state;
		}
		
		if (document.getElementById)
		{
		    if(!document.all)
		    {
			    hza = document.getElementById(layer_ref);
			    hza.style.display = state;
			}
		}
	}