var currentPage = 1;
var numPages = 3;

function nextPage() {
	Effect.Fade("page_" + currentPage);
	currentPage++;
	setTimeout("Effect.Appear('page_" + currentPage + "')", 1000);
	
	if (currentPage == numPages) {
		document.getElementById("nextButton").style.visibility = "hidden";
	}
	
	if (currentPage > 1) {
		document.getElementById("previousButton").style.visibility = "visible";
	}
}

function previousPage() {
	Effect.Fade("page_" + currentPage);
	currentPage--;
	setTimeout("Effect.Appear('page_" + currentPage + "')", 1000);
	
	if (currentPage < numPages) {
		document.getElementById("nextButton").style.visibility = "visible";
	}
	
	if (currentPage == 1) {
		document.getElementById("previousButton").style.visibility = "hidden";
	}
}