try {
    console.log("Initializing console.");
} catch(e) {
    console = { log: function() {} };
}


/**
 * Plugin to let you animate background-position.
 * @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);


$(function() {
    $('div#header li a')
        .css({ backgroundPosition: '(0px -192px)' })
        .mouseover(function() {
            console.log("Mouse in!");
            $(this).stop().css('background-position', '0px 0px');
        })
        .mouseout(function() {
            console.log("Mouse out!");
            $(this).stop().animate({
                backgroundPosition: '(0px -192px)'
            }, 600);
        });
    $('.highlight:first').focus();
});