function start_slideshow(start_frame, end_frame, delay, transition_time) {
    setTimeout(switch_slides(start_frame,start_frame,end_frame, delay, transition_time), delay);
}

function switch_slides(frame, start_frame, end_frame, delay, transition_time) {
    return (function() {
        Effect.Fade('slideshow' + frame, { duration: transition_time });
        if (frame == end_frame) { frame = start_frame; } else { frame = frame + 1; }
        setTimeout("Effect.Appear('slideshow" + frame + "', {duration: " + transition_time + "} );", (transition_time*1000) + 250);
        setTimeout(switch_slides(frame, start_frame, end_frame, delay, transition_time), delay + (transition_time*1000*2) + 250);
    })
}

function validateAll() {
    var myAjax = new Ajax.Updater(
				{success: 'contactform_holder', failure: 'message'},
				'/contactsubmit.php',
				{
					method: 'post',
					encoding: 'iso-8859-1',
					parameters: $('contactform').serialize()
				});
}