//jquery history

/**
 * jQuery history event v0.1
 * Copyright (c) 2008 Tom Rodenberg <tarodenberg gmail com>
 * Licensed under the GPL (http://www.gnu.org/licenses/gpl.html) license.
 */
(function($) {
    var currentHash, previousNav, timer, hashTrim = /^.*#/;

    var msie = {
        iframe: null,
        getDoc: function() {
            return msie.iframe.contentWindow.document;
        },
        getHash: function() {
            return msie.getDoc().location.hash;
        },
        setHash: function(hash) {
            var d = msie.getDoc();
            d.open();
            d.close();
            d.location.hash = hash;
        }
    };

    var historycheck = function() {
        var hash = msie.iframe ? msie.getHash() : location.hash;
        if (hash != currentHash) {
            currentHash = hash;
            if (msie.iframe) {
                location.hash = currentHash;
            }
            var current = $.history.getCurrent();
            $.event.trigger('history', [current, previousNav]);
            previousNav = current;
        }
    };

    $.history = {
        add: function(hash) {
            hash = '#' + hash.replace(hashTrim, '');
            if (currentHash != hash) {
                var previous = $.history.getCurrent();
                location.hash = currentHash = hash;
                if (msie.iframe) {
                    msie.setHash(currentHash);
                }
                $.event.trigger('historyadd', [$.history.getCurrent(), previous]);
            }
            if (!timer) {
                timer = setInterval(historycheck, 100);
            }
        },
        getCurrent: function() {
            return currentHash.replace(hashTrim, '');
        }
    };

    $.fn.history = function(fn) {
        $(this).bind('history', fn);
    };

    $.fn.historyadd = function(fn) {
        $(this).bind('historyadd', fn);
    };

    $(function() {
        currentHash = location.hash;
        if ($.browser.msie) {
            msie.iframe = $('<iframe style="display:none" src="javascript:false;"></iframe>').prependTo('body')[0];
            msie.setHash(currentHash);
            currentHash = msie.getHash();
        }
    });
})(jQuery);


// create an array of the services based on what's in the list of links
var servicesArr = new Array();

// make service link active
function selectService(id) {
	$.history.add('id-'+id);
	$(".serv a").removeClass("active");
	$(".serv a."+id).addClass("active");
}

// returns jquery element by hash id
function getService(hash) {
	hash = hash.split('id-')[1];
	return $("a."+hash);
}

$(document).ready(function(){

	$('#servicesWrapper a').each(function(){
        servicesArr.push("." + $(this).attr('class'));
	});

	// link classes					   
	$("#servicesSlides").jCarouselLite({
		 btnNext: "#next",
		 btnPrev: "#prev",
		 visible: 1,
		 btnGo: servicesArr,
		// add active class to links that match current frame ids.
		afterEnd: function(currentFrame) {
			selectService(currentFrame[0].id);
		}
	});
	
	// get current hash and start the carousel with the correct position
	var currentHash = $.history.getCurrent();
	if(currentHash == '') $('#servicesWrapper a:first').click();
	else getService(currentHash).click();
	
	// on hash change event
	$(window).history(function(e, hash) {
		// get jquery element by the given hash and move the carousel
		getService(hash).click();
    });	

});