var geobj = $('#gradetabid > li');
geobj.each(function(i){
	$(this).mouseover(function(){
		geobj.find('a').css({'background':'transparent url(../images/tpl/index_bg.gif) no-repeat scroll -88px -41px','color':'white'});
		$(this).find('a').css({'background':'transparent url(../images/tpl/index_bg.gif) no-repeat scroll -14px -41px','color':'black'});
		var gecontobj = $('#gradetabcontid > table');
		gecontobj.hide();
		gecontobj.eq(i).show();;
	});
});