// JavaScript Document

var scrollTimer = null;
	
	function startScroll(direction)
	{
		if (scrollTimer != null)
			return;
		scrollTimer = window.setInterval("doScroll('"+direction+"')", 10);
	}
	
	function stopScroll()
	{
		if (scrollTimer != null)
		{
			window.clearInterval(scrollTimer);
			scrollTimer = null;
		}
	}
	
	function doScroll(direction)
	{
		if(direction == "up")
		{
			var objDiv = document.getElementById("opmaak11_");
			objDiv.scrollTop = objDiv.scrollTop-2;
		}
		if(direction =="down")
		{
			var objDiv = document.getElementById("opmaak11_");
			objDiv.scrollTop = objDiv.scrollTop+2;	
		}
	}
	
	
	function goToTop(){
		var objDiv = document.getElementById("opmaak11_");
			objDiv.scrollTop = 0;
	}
	
	function show(id)
	{
		el = document.getElementById(id);

		if (el.style.display == 'none')
		{
			el.style.display = '';
			el = document.getElementById(id);
		
		} else {
			el.style.display = 'none';
			el = document.getElementById(id);

		}
	}

function validate(){
		var complete	  = true;
		var illegalChars  = /[\W_]/;

		var name	  	= document.mail.name.value;
		var	email		= document.mail.email.value;
		var message 	= document.mail.message.value;
	
	if (name == "") {
		alert('Please fill in a valid name.');
		complete = false;
	}
	if (email == "") {
		alert('Please fill in a valid e-mail address.');
		complete = false;
	}
	if (message == "") {
		alert('Please fill in a valid message.');
		complete = false;
	}
	if ((email.indexOf("@") == -1) || (email.indexOf(".") == -1)) {
		alert('Your e-mail address is not valid.');
		complete = false;
	}
	
	return complete;
}