$(function(){

	// ***
	// Scrolling background
	// ***
		
	// height of background image in pixels
	var backgroundheight = 4000;
	
	// get the current minute/hour of the day
	var now = new Date();
	var hour = now.getHours();
	var minute = now.getMinutes();
	
	// work out how far through the day we are as a percentage - e.g. 6pm = 75%
	var hourpercent = hour / 24 * 100;
	var minutepercent = minute / 60 / 24 * 100;
	var percentofday = hourpercent + minutepercent;
	
	// calculate which pixel row to start graphic from based on how far through the day we are
 	var startoffset = backgroundheight / 100 * percentofday;

	// graphic starts at approx 6am, so adjust offset by 1/4
	// scratch that, IE doesnt like negaive starts.. TODO: find a better way.
	var startoffset = 0;
	
	// end 1x background height after the start offset so we get a smooth loop
	var endoffset = startoffset + backgroundheight;
	
   	function scrollbackground() {
		// set the background start position
		$('body').css({
			backgroundPosition: '50% -' + startoffset + 'px'
		});
		// animate through to the end
		$('body').animate({
			backgroundPosition:'(50% -' + endoffset + 'px)'
			},
			100000,
			"linear",
			function () {
				// callback to self to loop animation
				scrollbackground();
			}
		);
	}
   
	// start the animation
	scrollbackground();
   
	// ***
	// Fully clickable divs
	// ***
	
	$("div.clickable").click(
	function()
	{
	    window.location = $("a", this).attr("href");
	    return false;
	});

	// ***
	// Leading image expander
	// ***

	$('.leading').hover(
		function() {
			if ($('img', this).height() > 300) {
				$(this).animate({
					height: $('img', this).height()
				}, 300, 'swing');
			}
		},
		function() {
			$(this).animate({
				height: "300px"
			}, 200);
		}	
	);	



	
});

var blank = new Image();
blank.src = 'images/spacer.gif';

$(document).ready(function() {
	var badBrowser = (/MSIE ((5\.5)|6)/.test(navigator.userAgent) && navigator.platform == "Win32");
	if (badBrowser) {
	 // get all pngs on page
	 $('img[src$=.png]').each(function() {
	   if (!this.complete) {
	     this.onload = function() { fixPng(this) };
	   } else {
	     fixPng(this);
	   }
	 });
	}
});

function fixPng(png) {
	// get src
	var src = png.src;
	// set width and height
	if (!png.style.width) { png.style.width = $(png).width(); }
	if (!png.style.height) { png.style.height = $(png).height(); }
	// replace by blank image
	png.onload = function() { };
	png.src = blank.src;
	// set filter (display original image)
	png.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "',sizingMethod='scale')";
}