/*********************/
var featurePath = 'images/feature/';
var featureSets = 4;
var promos = 0;
/*********************/
show((0), 'hidden'); // Hide feature images to avoid flicker
show((1), 'none'); // Hide default promo to avoid flicker
function show(rule, state) {
	var theRules = new Array();
	if (document.styleSheets[0].cssRules) {
		theRules = document.styleSheets[0].cssRules;
	}
	else if (document.styleSheets[0].rules) {
		theRules = document.styleSheets[0].rules;
	}
	if(state == "visible" || state == "hidden") {
		theRules[rule].style.visibility = state;
	}
	else {
		theRules[rule].style.display = state;
	}
}
function randomInt(minimum, maximum) {;
	var randomInt = Math.floor(Math.random() * (maximum - minimum) + minimum);
	return randomInt;
}
function features() {
	var minimum = 1;
	var maximum = featureSets + 1;
	var randomNumber = randomInt(minimum, maximum);
	for(var count=1; count<=4; count++) {
		var imageID = 'feature_' + count;
		var source =  featurePath + 'week' + randomNumber + '_' + count + '.jpg'; // filename format: "week[x]_[1-4].jpg"
		document.getElementById(imageID).src = source;
	}
	show(0, 'visible');
}

function promo() {
	var promo;
	var minimum = 0;
	var maximum = promos + 1;
	var randomNumber = randomInt(minimum, maximum);
	switch(randomNumber) {
		case 0:	// If featurePackage is 0, the default is left on
			promo = '';
			show(1, 'block');
		break;
		case 1:
		promo = '<a href="http:\/\/www.uihealthcare.com\/depts\/uihealthaccess\/index.html"><img src="images\/promo\/access.jpg" width="175" \/><span>UI Health Access<br>Your 24\/7 resource for health and service information<\/span><\/a>'
		break;
		case 2:
		promo = '<a href="http:\/\/www.uihealthcare.com\/depts\/volunteerprogram\/cradleandall.html"><img src="images\/promo\/cradle.jpg" width="175" \/><span>Cradle and All<br>For the new baby in your life.<\/span><\/a>'
		break;
		case 3:
		promo = '<a href="http:\/\/www.healthcare.uiowa.edu\/Programs\/Volunteerservices\/emailpatient.asp"><img src="images\/promo\/email.jpg" width="175" \/><span>e-mail a Patient<\/span><\/a>'
		break;
		case 4:
		promo = '<a href="http:\/\/www.uihealthcare.com\/depts\/uifamilycare\/index.html"><img src="images\/promo\/family.jpg" width="175" \/><span>My ideal doctor provides the best of both worlds. <br>UI Family Care<\/span><\/a>'
		break;
		case 5:
		promo = '<a href="http:\/\/www.uihealthcare.com\/infofor\/jobs\/index.html"><img src="images\/promo\/job.jpg" width="175" \/><span>Interested in working here?<\/span><\/a>'
		break;
		case 6:
		promo = '<a href="http:\/\/www.uihealthcare.com\/kxic\/index.html"><img src="images\/promo\/kxic.jpg" width="175" \/><span>University of Iowa Health Care Today (KXIC)<\/span><\/a>'
		break;
		case 7:
		promo = '<a href="http:\/\/www.uihealthcare.com\/infofor\/patients\/rightsresponsibilities.html"><img src="images\/promo\/patientrights.jpg" width="175" \/><span>Patient rights and responsibilities<\/span><\/a>'
		break;
		case 8:
		promo = '<a href="http:\/\/www.uihealthcare.com\/depts\/volunteerprogram\/becoming.html"><img src="images\/promo\/volunteers.jpg" width="175" \/><span>Interested in volunteering?<\/span><\/a>'
		break;
		case 9:
		promo = '<a href="http:\/\/www.uihealthcare.com\/depts\/volunteerprogram\/giftshop\/index.html"><img src="images\/promo\/wildrose.jpg" width="175" \/><span>Need a gift? Wild Rose Gifts<\/span><\/a>'
		break;
		case 10:
		promo = '<a href="http:\/\/www.uihealthcare.com\/depts\/uiquickcare\/index.html"><img src="images\/promo\/quickcare.jpg" width="175" \/><span>UI QuickCare: Convenient. Affordable.<br>No appointment necessary.<\/span><\/a>'
		break;
		case 11:
		promo = '<a href="http:\/\/www.uihealthcare.com\/depts\/med\/obgyn\/clinics\/nursemidwife\/index.html"><img src="images\/promo\/midwife.jpg" width="175" \/><span>Nurse-Midwifery: A natural choice.<br>Now available at UI Family Care in North Liberty.<\/span><\/a>'
		break;
		
		case 12:
		promo = '<a href="http:\/\/www.uihealthcare.com\/depts\/uiheartcare\/hra.html"><img src="images\/promo\/heartbeat.jpg" width="175" \/><span>Learn your risk for heart disease<\/span><\/a>'
		break;
		
	}
	document.write('<div>' + promo + '<\/div>');
}