// Portfolio navigator

function rollOver(image) {
	if (image == "prev") {
		$('previous').style.border = "1px solid #fff";
	}
	else {
		$('next').style.border = "1px solid #fff";
	}
	return false;
}
function rollOut(image) {
	if (image == "prev") {
		$('previous').style.border = "1px solid #000";
	}
	else {
		$('next').style.border = "1px solid #000";
	}
	return false;
}

var current_entry = 1;
function change(increment) {
	var NO_OF_ENTRIES = 6;
	
	if (increment == 1) {
		if (current_entry + increment <= NO_OF_ENTRIES) {
			var pixel_increment = (current_entry-1) * -800 + -800;
			var effect = new Effect.Move('folio_holder', { x: pixel_increment, y: 0, mode: 'absolute' });
			current_entry++;
		}
		else {
			var effect = new Effect.Move('folio_holder', { x: 0, y: 0, mode: 'absolute' });
			current_entry = 1;
		}
	}
	else {
		if (current_entry + increment >= 1) {
			var pixel_increment = current_entry * 800;
			var effect = new Effect.Move('folio_holder', { x: 800, y: 0, mode: 'relative' });
			current_entry--;
		}
		else {
			var pixel_increment = (NO_OF_ENTRIES-1) * -800;
			var effect = new Effect.Move('folio_holder', { x: pixel_increment, y: 0, mode: 'absolute' });
			current_entry = NO_OF_ENTRIES;
		}
	}
	document.getElementById('currwork').innerHTML = "Work " + current_entry + " of " + NO_OF_ENTRIES;
}