$(document).ready(function(){
	(function($) {
		$.extend($.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);

	$('.item_menu')
		.css( {backgroundPosition: "0 0"} )
		.mouseover(function(){
			$(this).stop().animate({backgroundPosition:"(0 -205px)"}, {duration:400})
		})
		.mouseout(function(){
			$(this).stop().animate({backgroundPosition:"(0 0)"}, {duration:200})
		});
	
	$('#avisoLegal').click(function(e) {
			e.preventDefault();
			$.nyroModalManual({
				url: 'avisoLegal.htm'
			});
			return false;
		});
		
	$('#creditos').click(function(e) {
			e.preventDefault();
			$.nyroModalManual({
				url: 'creditos.htm'
			});
			return false;
		});
});