function validate_login ()
	{
    	var errors = "Voltooi onderstaande!\n";
		var post = true;

        if ( $('input#username').val() == "" || $('input#username').val() == 'Gebruikersnaam »' )
		{
			errors += "Gebruiksnaam »\n";
			post = false;
		}
		
		if ( $('input#password').val() == "" || $('input#password').val() == '**********' )
		{
			errors += "Wagwoord\n";
			post = false;
		} 

        if ( post == false ) alert ( errors );
		return post;
    }
    
    $(document).ready ( function () {
		
        $('input#username').focus ( function () 
            {
                if ( $('input#username').val() == 'Gebruikersnaam »' )
                {
                    $('input#username').val('');
                }
            });
            
        $('input#username').blur ( function () 
            {
                if ( $('input#username').val() == '' )
                {
                    $('input#username').val('Gebruikersnaam »');
                }
            });
            
        $('input#password').focus ( function () 
            {
                if ( $('input#password').val() == '**********' )
                {
                    $('input#password').val('');
                }
            });
            
        $('input#password').blur ( function () 
            {
                if ( $('input#password').val() == '' )
                {
                    $('input#password').val('**********');
                }
            });
            
        $('input#login_submit').click( function () 
            {
				
                if ( validate_login () == false )
				{
					return false;
				}
				else
				{
					$('input#login_submit').submit();
				}
                
			});

        $('a.logged_out').click ( function ()
            {
                alert ('Teken in of registreer om voort te gaan');
                return false;
            });
        
		});