/*
* Copyright (C) 2009 Joel Sutherland
* Licenced under the MIT license
* http://www.newmediacampaigns.com/page/autosprites-jquery-menu-plugin
*/

(function($){$.fn.autosprites=function(settings){settings=$.extend({offset:'100%',orientation:'horizontal',over:{opacity:'show'},overSpeed:500,out:{opacity:'hide'},outSpeed:500,activeState:false,activeClass:'active',activeSprites:false},settings);function rempx(string){return Number(string.substr(0,string.length-2));}
function addpx(number){return number+'px';}
$(this).each(function(){var backgroundImage=$(this).css('background-image');$(this).css('zIndex',100).find('a').css('zIndex',99);var totalPositionOffset=0;$(this).children().each(function(){var positionOffset='-'+addpx(totalPositionOffset);var baseOffset='0px';if(settings.activeState&&$(this).hasClass(settings.activeClass)){baseOffset='-'+addpx(rempx(settings.offset));if(settings.activeSprites)
baseOffset='-'+addpx(rempx(settings.offset)*2);}
var position=settings.orientation=='horizontal'?positionOffset+' '+baseOffset:baseOffset+' '+positionOffset;var offsetPosition=settings.orientation=='horizontal'?positionOffset+' -'+settings.offset:'-'+settings.offset+' '+positionOffset;$(this).css({backgroundImage:backgroundImage,backgroundPosition:position});var width=$(this).css('width');var height=$(this).css('height');var hover=$('<div>&nbsp;</div>').css({cursor:'hand',zIndex:1,position:'absolute',top:0,left:0,width:width,height:height,backgroundImage:backgroundImage,backgroundPosition:offsetPosition}).hide();$(this).prepend(hover);$(this).hover(function(){$(this).find('div').stop(false,true).animate(settings.over,settings.overSpeed);},function(){$(this).find('div').stop(false,true).animate(settings.out,settings.outSpeed);});totalPositionOffset+=settings.orientation=='horizontal'?rempx(width):rempx(height);});});}})(jQuery);