/**
 * @author Alexander Farkas
 * v. 1.02
 */
(function($) {
	$.extend($.fx.step,{
	    backgroundPosition: function(fx) {
            if (fx.state === 0 && typeof fx.end == 'string') {
                var start = $.curCSS(fx.elem,'backgroundPosition');
                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]];
			}
            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];
            
           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]];
           }
        }
	});
})(jQuery);

$(document).ready(function() {
	//Set css in Firefox (Required to use the backgroundPosition js)
	$('#shutter1').css({backgroundPosition: '0px 0px'});
	$('#shutter2').css({backgroundPosition: '0px 0px'});
	$('#shutter3').css({backgroundPosition: '0px 0px'});
	$('#shutter4').css({backgroundPosition: '0px 0px'});
	$('#shutter5').css({backgroundPosition: '0px 0px'});
	
	var url = document.location.toString();
	if(url.indexOf("cases.html")!=-1)
	{
		$('#shutter2').css({backgroundPosition: '0px 100px'});
		$('#shutter2 a').removeClass("link");
	}
	
	if(url.indexOf("estimate.html")!=-1)
	{
		$('#shutter3').css({backgroundPosition: '0px 100px'});
		$('#shutter3 a').removeClass("link");
	}
	
	if(url.indexOf("jobs.html")!=-1)
	{
		$('#shutter4').css({backgroundPosition: '0px 100px'});
		$('#shutter4 a').removeClass("link");
	}
	
	if(url.indexOf("contact.html")!=-1)
	{
		$('#shutter5').css({backgroundPosition: '0px 100px'});
		$('#shutter5 a').removeClass("link");
	}
	
	if(url.indexOf("index.html")!=-1 || url.indexOf(".html")==-1)
	{
		$('#shutter1').css({backgroundPosition: '0px 100px'});
		$('#shutter1 a').removeClass("link");
	}
	
	//Animate the shutter  
	$(".link").hover(function(){
		  $(this).parent().animate({backgroundPosition: '(0px 100px)'}, 500 );
		}, function() {
		  $(this).parent().animate({backgroundPosition: '(0px 0px)'}, 500 );
	}); 
 });