//IE6去除png灰色背景
$(document).ready(function () {
    $(document).pngFix();
})

function JHshNumberText() {
    if (!(((window.event.keyCode >= 48) && (window.event.keyCode <= 57))
	|| (window.event.keyCode == 13) || (window.event.keyCode == 46)
	|| (window.event.keyCode == 45))) {
        window.event.keyCode = 0;
    }
}

//左侧导航
$(function () {
    $(".nav .item").each(function (i) {
        $(this).click(function () {
            $(".nav").find(".block").removeClass("block").addClass("none");
            $(".item .s" + i).removeClass("none").addClass("block");
        });
    });
})