// JavaScript Document

function menuHover(obj) {
	if (obj.className == "menuItem") {
		obj.className = "menuItemCurrent";	
	
		obj.onmouseout = function() {
			obj.className = "menuItem";	
		}
	}
}

var currentPage = 1;

function showNextImagePage(totalPages) {
	var pageNum = currentPage + 1;
	
	for (var i = 1; i <= totalPages; i++) {
		if (i == pageNum) {
			showDiv("images" + i);
		} else {
			hideDiv("images" + i);
		}
	}
	
	if (pageNum == 1) {
		showDiv("nextButton");
		hideDiv("prevButton");
	} else if (pageNum == totalPages) {
		hideDiv("nextButton");
		showDiv("prevButton");
	} else {
		showDiv("nextButton");
		showDiv("prevButton");
	}
	
	currentPage = pageNum;
}

function showPrevImagePage(totalPages) {
	var pageNum = currentPage - 1;
	
	for (var i = 1; i <= totalPages; i++) {
		if (i == pageNum) {
			showDiv("images" + i);
		} else {
			hideDiv("images" + i);
		}
	}
	
	if (pageNum == 1) {
		showDiv("nextButton");
		hideDiv("prevButton");
	} else if (pageNum == totalPages) {
		hideDiv("nextButton");
		showDiv("prevButton");
	} else {
		showDiv("nextButton");
		showDiv("prevButton");
	}

	currentPage = pageNum;
}

function showDiv(id) {
	document.getElementById(id).style.display = "";
}

function hideDiv(id) {
	document.getElementById(id).style.display = "none";
}


function randomNumber(limit){
  return Math.floor(Math.random()*limit);
}

var lastTipNum = 0;
var numTips = 7;
function randomPalmTip() {
	do {
		var num = randomNumber(numTips);
	} while (num == 0 || num == lastTipNum);
	
	for (var i = 1; i <= numTips; i++) {
		if (i == num) {
			document.getElementById("palmTips" + i).style.display = "";
		} else {
			document.getElementById("palmTips" + i).style.display = "none";
		}
	}
}
function closePalmTip(num) {
	document.getElementById("palmTips" + num).style.display = "none";
}