$(function(){
	
	 (function($) { $.extend($.fx.step, { backgroundPosition: function(fx) { if (fx.state === 0 && typeof fx.end == 'string') { if(navigator.appName == 'Microsoft Internet Explorer') { var start = $.curCSS(fx.elem,'backgroundPositionX'); start += ' '; start += $.curCSS(fx.elem,'backgroundPositionY'); } else { 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);
	
	$('#menu .m1')
		.css( {backgroundPosition: "-280px 0"} )
		.mouseover(function(){
			$(this).stop().animate({backgroundPosition:"(0 0)"}, {duration:300})
		})
		.mouseout(function(){
			$(this).stop().animate({backgroundPosition:"(-280px 0)"}, {duration:300})
		})
	$('#menu .m2')
		.css( {backgroundPosition: "-280px -40px"} )
		.mouseover(function(){
			$(this).stop().animate({backgroundPosition:"(0 -40px)"}, {duration:300})
		})
		.mouseout(function(){
			$(this).stop().animate({backgroundPosition:"(-280px -40px)"}, {duration:300})
		})
	
	$('#menu .m3')
		.css( {backgroundPosition: "-280px -80px"} )
		.mouseover(function(){
			$(this).stop().animate({backgroundPosition:"(0 -80px)"}, {duration:300})
		})
		.mouseout(function(){
			$(this).stop().animate({backgroundPosition:"(-280px -80px)"}, {duration:300})
		})
		
	$('#menu .m4')
		.css( {backgroundPosition: "-280px -120px"} )
		.mouseover(function(){
			$(this).stop().animate({backgroundPosition:"(0 -120px)"}, {duration:300})
		})
		.mouseout(function(){
			$(this).stop().animate({backgroundPosition:"(-280px -120px)"}, {duration:300})
		})
		
	$('#menu .m5')
		.css( {backgroundPosition: "-280px -160px"} )
		.mouseover(function(){
			$(this).stop().animate({backgroundPosition:"(0 -160px)"}, {duration:300})
		})
		.mouseout(function(){
			$(this).stop().animate({backgroundPosition:"(-280px -160px)"}, {duration:300})
		})
		
		});