function MuisOver( id )
{
	document.getElementById( id ).style.backgroundColor = "white";
}

function MuisUit( id )
{
	document.getElementById( id ).style.backgroundColor = "#E7B5E7";
}

function Klik( url )
{
	location.href = url;
}

function NieuwBericht()
{
	location.href = "gb_nieuwbericht.php";
}

function Checkform()
{
	var email = document.getElementById( "email" ).value;

	if ( /^$/.test( email ) )
	{
		alert( "Het e-mail adres is niet ingevuld." );
		return( 1 );
	}
	
	if ( ! /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/.test( email ) )
	{
		alert( "Het e-mail adres is niet correct ingevuld." );
		return( 1 );
	}

	document.getElementById( "contact" ).submit();
}