/**
 * @author Andrew Weyrauch
 * v. 1.00
 */
//set base url below as baseurl variable

var baseurl;
baseurl = "http://www.actonostry.ca";

//animation
$(document).ready(function(){
	var timer;
	timer = 0;
	timer = setTimeout(randomanimation, 0);

});

function randomanimation(){
var randomNum=Math.floor(Math.random()*5);
	if (randomNum == 0)
		{
		movingimage0();
		}
	if (randomNum == 1)
		{
		movingimage1();
		}
	if (randomNum == 2)
		{
		movingimage2();
		}
	if (randomNum == 3)
		{
		movingimage3();
		}
	if (randomNum == 4)
		{
		movingimage4();
		}
}


function movingimage0(){
	$('#animation').css("background-image", "url(" + baseurl + "/wp-content/themes/aoa/images/1-PAC-A.jpg)");
	$('#animation').css({backgroundPosition: '0 -10px'});
	$('#animation').animate({backgroundPosition: '(0 -2600px)'}, 25000, 'linear', function(){timer = setTimeout(randomanimation, 0);
	});
}

function movingimage1(){
	$('#animation').css("background-image", "url(" + baseurl + "/wp-content/themes/aoa/images/2-PAC-B.jpg)");
	$('#animation').css({backgroundPosition: '0 0'});
	$('#animation').animate({backgroundPosition: '(0 -2600px)'}, 25000, 'linear', function(){timer = setTimeout(randomanimation, 0);
	});
}

function movingimage2(){
	$('#animation').css("background-repeat", "no-repeat");
	$('#animation').css("background-image", "url(" + baseurl + "/wp-content/themes/aoa/images/3-HAR-A.jpg)");
	$('#animation').css({backgroundPosition: '760px 0'});
	$('#animation').animate({backgroundPosition: '(-1492px 0)'}, 20000, 'linear', function(){timer = setTimeout(randomanimation, 0);
	});
}

function movingimage3(){
	$('#animation').css("background-repeat", "no-repeat");
	$('#animation').css("background-image", "url(" + baseurl + "/wp-content/themes/aoa/images/4-HAR-B.jpg)");
	$('#animation').css({backgroundPosition: '760px 0'});
	$('#animation').animate({backgroundPosition: '(-1492px 0)'}, 20000, 'linear', function(){timer = setTimeout(randomanimation, 0);
	});
}

function movingimage4(){
	$('#animation').css("background-repeat", "no-repeat");
	$('#animation').css("background-image", "url(" + baseurl + "/wp-content/themes/aoa/images/5-OMS-A.jpg)");
	$('#animation').css({backgroundPosition: '0 0'});
	$('#animation').animate({backgroundPosition: '(0 -306)'}, 8000, 'linear', function(){timer = setTimeout(randomanimation, 0);
	});
}

/**
 * backgroundPosition function
 * @author Alexander Farkas
 * v. 1.22
 */


(function($) {
	if(!document.defaultView || !document.defaultView.getComputedStyle){ // IE6-IE8
		var oldCurCSS = $.curCSS;
		$.curCSS = function(elem, name, force){
			if(name === 'background-position'){
				name = 'backgroundPosition';
			}
			if(name !== 'backgroundPosition' || !elem.currentStyle || elem.currentStyle[ name ]){
				return oldCurCSS.apply(this, arguments);
			}
			var style = elem.style;
			if ( !force && style && style[ name ] ){
				return style[ name ];
			}
			return oldCurCSS(elem, 'backgroundPositionX', force) +' '+ oldCurCSS(elem, 'backgroundPositionY', force);
		};
	}
	
	var oldAnim = $.fn.animate;
	$.fn.animate = function(prop){
		if('background-position' in prop){
			prop.backgroundPosition = prop['background-position'];
			delete prop['background-position'];
		}
		if('backgroundPosition' in prop){
			prop.backgroundPosition = '('+ prop.backgroundPosition;
		}
		return oldAnim.apply(this, arguments);
	};
	
	function toArray(strg){
		strg = strg.replace(/left|top/g,'0px');
		strg = strg.replace(/right|bottom/g,'100%');
		strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
		var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
		return [parseFloat(res[1],10),res[2],parseFloat(res[3],10),res[4]];
	}
	
	$.fx.step. backgroundPosition = function(fx) {
		if (!fx.bgPosReady) {
			var start = $.curCSS(fx.elem,'backgroundPosition');
			if(!start){//FF2 no inline-style fallback
				start = '0px 0px';
			}
			
			start = toArray(start);
			fx.start = [start[0],start[2]];
			var end = toArray(fx.end);
			fx.end = [end[0],end[2]];
			
			fx.unit = [end[1],end[3]];
			fx.bgPosReady = true;
		}
		//return;
		var nowPosX = [];
		nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0];
		nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1];           
		fx.elem.style.backgroundPosition = nowPosX[0]+' '+nowPosX[1];

	};
})(jQuery);