//var bgsArray = new Array("http://www.dennisdean.nl/media/backgrounds/cupido_white.jpg", "http://www.dennisdean.nl/media/backgrounds/paard_black.jpg", "http://www.dennisdean.nl/media/backgrounds/cstman_black.jpg","http://dennisdean.nl/media/backgrounds/Website-mini.jpg", "http://dennisdean.nl/media/backgrounds/studio_black.jpg");

//function randomBackground(){
//	var randomNum = Math.floor(Math.random() * bgsArray.length);
//	document.body.style.backgroundImage = 'url(' + bgsArray[randomNum]+ ')';
//}

function checkForm(id){
	var aantalfouten 	= 0;
	var formRoot 		= document.getElementById(id);
	if($("name").value == ""){
		showMessage();
		$("labelName").className 	= "red";
		$("name").className			= "red";
		aantalfouten++;
	}else{
		$("labelName").className 	= "";
		$("name").className			= "";
	}
	if($("emailaddress").value == ""){
		showMessage();
		$("labelMail").className 	= "red";
		$("emailaddress").className	= "show red";
		aantalfouten++;
	}else{
		$("labelMail").className 			= "";
		$("emailaddress").className			= "";
		if(!checkEmail($("emailaddress"))){
			$("labelMail").className 	= "red";
			$("emailaddress").className	= "show red";
			aantalfouten++;
		 }
	}

	if($("message").value == ""){
		showMessage();
		$("labelMessage").className = "red";
		$("message").className		= "show red";
		aantalfouten++;
	}else{
		$("labelMessage").className 	= "";
		$("message").className			= "";
	}
	if(aantalfouten == 0){
		hideMessage();
		formRoot.submit();
	}else{
		return false;	
	}
}

function showMessage(){
	$("foutmelding").className = "show red";
}

function hideMessage(){
	$("foutmelding").className = "hide";
}

function checkEmail(eadres){
	var reg = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
	eadres = eadres.value;
	return reg.test(eadres);
}