// home.js
// Geoff Pack, September 2011

var main, sidebar, footer, info;
var divs = [
	/* [id,limit,range,speed], */
	/*['cruiseHead',160,160,2],
	['cruiseText',100,100,1],
	['cruiseLine',130,130,2],*/
	
	['austarHead',700,200,2],
	['austarText',750,200,2.5],
	['austarLine',800,200,3],
	
	['isuzuHead',1300,200,2],
	['isuzuText',1400,200,2.5],
	['isuzuLine',1450,200,3],
	
	/*['newsHead',170,170,-0.3],
	['news1Image',210,200,-0.6],
	['news1Subhead',360,200,-0.9],
	['news1Text',390,200,-1.2],
	
	['news2Image',460,200,-0.6],
	['news2Subhead',560,200,-0.9],
	['news2Text',620,200,-1.2],*/
	
	['newsletter',800,200,-0.3],

	['blogHead',1070,200,-0.3],
	['blogP1',1120,200,-0.6],
	['blogP2',1180,200,-0.9],
	['blogP3',1270,200,-1.2],
	
	['twitterHead',1380,200,-0.3],
	['twitterP1',1420,200,-0.6],
	['twitterP2',1490,200,-0.9],
	['twitterP3',1580,200,-0.9],

	['facebook',1690,200,-0.6],
	['linkedin',1770,200,-0.6]
];

function showInfo() {
	if ((info != null) && (info.style.display != 'none')) {
		info.innerHTML = 'document.body.scrollTop = ' + document.body.scrollTop;
		info.innerHTML += '<br />window.pageYOffset = ' + window.pageYOffset;
		info.innerHTML += '<br />document.body.scrollHeight = ' + document.body.scrollHeight;
		info.innerHTML += '<br />window.innerHeight = ' + window.innerHeight;
		
		//info.innerHTML += '<br />div[0]: ' + divs[0].style.opacity;
	}
}

function fixHeights() {
	// make sidebar go all the way
	//if (footer != null) {footer.style.height = window.innerHeight + 'px';}
	//sidebar.style.height = document.body.scrollHeight - 127 + 'px';
	showInfo();
}

function moveIt() {
	var Y = window.pageYOffset; // +ve down
	var i, div, limit, range, speed;
	var vSpeed = -0.5;

	for (i=0; i<divs.length; i++) {
		div   = document.getElementById(divs[i][0]);	// the dive to move
		limit = divs[i][1];	// if scrollTop < limit then no motion
		range = divs[i][2];	// above limit + range, opacity = 0
		speed = divs[i][3]; // horizontal speed
		
		//if (i < 9) {
		if (i < 6) {
			// have positions, so animate margin
			div.style.marginLeft = ((Y < limit) ? (speed * (Y - limit)) : 0) + 'px';		
			div.style.marginTop  = ((Y < limit) ? (vSpeed * (Y - limit)) : 0) + 'px';
		} else {
			// have margins, so animate position
			div.style.left = ((Y < limit) ? (speed * (Y - limit)) : 0) + 'px';		
			div.style.top  = ((Y < limit) ? (vSpeed * (Y - limit)) : 0) + 'px';
		}
		div.style.opacity	= (Y < limit) ? ((Y - (limit-range))/range) : 1;
	}
	
	showInfo();	
}

function init() {
	var i;
	//body = document.getElementsByTagName("body")[0];	
	if (!document.body) document.body = document.getElementsByTagName("body")[0];
	
	main = document.getElementById("main");
	sidebar = document.getElementById("sidebar");
	footer = document.getElementById("footer");
	info = document.getElementById("info");

	fixHeights();
	moveIt();
}

// jquery.tweet.js
jQuery(function($){
	$(".tweet").tweet({
		username: "edgecustom",
		avatar_size: 32,
		count: 3,
		loading_text: "loading tweets..."
	}).bind("loaded",function(){$(this).find("a").attr("target","_blank");});
});

$(document).ready(function() {

	// add Wordpress feed to sidebar
	// from: http://snipplr.com/view.php?codeview&id=50152
	$.ajax({
		type: "GET",
		url: "http://www.edgecustom.com.au/blog/?feed=rss2",
		dataType: "xml",
		success: function(xml) {
			var contain = $("#blog");
			var limit = 3;
						
			$(xml).find('item').each(function(index){
				if( index < limit ){
					var title = $(this).find('title').text();
					var description = $(this).find('description').text();
					var url = $(this).find('link').text();
					var pubDate = $(this).find('pubDate').text();
					$('<h4></h4>').html(title).appendTo(contain);
					$('<p></p>').html(description + ' <a href="' + url + '">more</a>').appendTo(contain);
					return;
				}	
			});//end each
		}
	});
});



//window.onscroll = moveIt;
//window.onresize = fixHeights;
//window.onload = init;