//Initialize Functions

window.addEvent('domready', function(){
	showSubNav('subnav_welcome');
    writeDate();
    writeAnnouncement();
	//Slideshow
	var data = {
	      '1.png': { caption: '' }, 
	      '2.png': { caption: '2009-10 Golden League Champs' }, 
	      '3.png': { caption: 'PHS Administrative Team' },
		  '4.png': { caption: 'PHS Art Show' },
		  '5.png': { caption: 'Internationally Acclaimed Chamber Chorale' },
		  '6.png': { caption: 'AVID hard at work' }, 
	      '7.png': { caption: 'Heath Academy Students - Back to School Night' },
		  '8.png': { caption: '' }
	    
	    };
	var phsSlideshow = new Slideshow('main_slideshow', data, { captions: true, controller: false, delay:8000, height: 370, hu: '../slideshow/index/', width: 496 });
});

//Subnavigation

function showSubNav(subnavname) {
	document.getElementById("subnav_welcome").className = "";
	document.getElementById("subnav_welcome").className = "invisible";
	document.getElementById("subnav_info").className = "";
	document.getElementById("subnav_info").className = "invisible";
	document.getElementById("subnav_gui").className = "";
	document.getElementById("subnav_gui").className = "invisible";
	document.getElementById("subnav_pro").className = "";
	document.getElementById("subnav_pro").className = "invisible";
	document.getElementById("subnav_ath").className = "";
	document.getElementById("subnav_ath").className = "invisible";
	document.getElementById("subnav_sl").className = "";
	document.getElementById("subnav_sl").className = "invisible";
	document.getElementById(subnavname).className = "";
	document.getElementById(subnavname).className = "visible";
}
	
//Date and Calendar

function writeDate() {
	var calDate = new Date();
	var calYear = calDate.getFullYear();
	var calMonth = calDate.getMonth();
	var calDay = calDate.getDate();
	var calDayOfWeek = calDate.getDay();
	var monthName = new Array(12);
	monthName[0] = "January";
	monthName[1] = "February";
	monthName[2] = "March";
	monthName[3] = "April";
	monthName[4] = "May";
	monthName[5] = "June";
	monthName[6] = "July";
	monthName[7] = "August";
	monthName[8] = "September";
	monthName[9] = "October";
	monthName[10] = "November";
	monthName[11] = "December";
	var utcDayName = new Array(7);
	utcDayName[0] = "Sunday";
	utcDayName[1] = "Monday";
	utcDayName[2] = "Tuesday";
	utcDayName[3] = "Wednesday";
	utcDayName[4] = "Thursday";
	utcDayName[5] = "Friday";
	utcDayName[6] = "Saturday";
	var dateString = monthName[calMonth];
	dateString += " ";
	dateString += calDay;
	dateString += " ";
	dateString += utcDayName[calDayOfWeek];
	dateString += " ";
	dateString += calYear;
	document.getElementById("date_write").innerHTML = dateString;
}

//Announcement

function writeAnnouncement() {
	
var xhttp = null;
var xmlAnn = null;

if (window.XMLHttpRequest) {
  xhttp = new XMLHttpRequest();
}
else {
  xhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

xhttp.open("GET","http://phsfalcons.org/xml/announcement.xml",false);
xhttp.send("");
xmlAnn = xhttp.responseXML;

if (xmlAnn!=null) {
    var ann=xmlAnn.getElementsByTagName("item");
	var annString="";
	if (ann.length < 5) {
		for (j=0;j<ann.length;j++) {
			annString += "<div class=\"item\">";
			annString += "<div class=\"item_title\">";
			annString += ann[j].getElementsByTagName("title")[0].childNodes[0].nodeValue;
			annString += "</div>";
			annString += "<div class=\"item_content\">";
			annString += ann[j].getElementsByTagName("content")[0].childNodes[0].nodeValue;
			annString += "</div>";
			annString += "</div>";
		}
	} else {
		for (j=0;j<5;j++) {
			annString += "<div class=\"item\">";
			annString += "<div class=\"item_title\">";
			annString += ann[j].getElementsByTagName("title")[0].childNodes[0].nodeValue;
			annString += "</div>";
			annString += "<div class=\"item_content\">";
			annString += ann[j].getElementsByTagName("content")[0].childNodes[0].nodeValue;
			annString += "</div>";
			annString += "</div>";
		}
	}
    
	document.getElementById("announ_main").innerHTML = annString;
}

}