这个脚本在IE上，正常运行。但在火狐浏览器上那个查询窗口根本不显示

悬赏园豆：200 [已关闭问题] 关闭于 2015-03-09 09:32

function menuIn() {
    if (n4) {
        clearTimeout(out_ID)
        if (menu.Top > menuH * -1 + 0 + 10) {
            menu.Top -= 8//设置out速度(原：8)
            in_ID = setTimeout("menuIn()", 1)
        }
        else if (menu.Top > menuH * -1 + 0) {
            menu.Top--
            in_ID = setTimeout("menuIn()", 1)
        }
    }
    else {
        clearTimeout(out_ID)
        if (menu.pixelTop > menuH * -1 + 0 + 10) {//Left-----Right
            menu.pixelTop -= 10//设置in速度(原：2)
            in_ID = setTimeout("menuIn()", 1)
        }
        else if (menu.pixelTop > menuH * -1 + 0) {
            menu.pixelTop--
            in_ID = setTimeout("menuIn()", 1)
        }
    }
}
function menuOut() {
    if (n4) {
        clearTimeout(in_ID)
        if (menu.Top < -10) {
            menu.Top += 4//设置out速度(原：4)
            out_ID = setTimeout("menuOut()", 1)
        }
        else if (menu.Top < 0) {
            menu.Top++
            out_ID = setTimeout("menuOut()", 1)
        }

    }
    else {
        clearTimeout(in_ID)
        if (menu.pixelTop < -10) {
            menu.pixelTop += 10//设置out速度(原：2)
            out_ID = setTimeout("menuOut()", 1)
        }
        else if (menu.pixelTop < 0) {//原25,到顶部的距离
            menu.pixelTop++
            out_ID = setTimeout("menuOut()", 1)
        }
    }
}
function fireOver() {
    clearTimeout(F_out)
    F_over = setTimeout("menuOut()", 10)
}
function fireOut() {
    clearTimeout(F_over)
    F_out = setTimeout("menuIn()", 10)
}
function init() {
    
    if (n4) {
        menu = document.flat
        menuH = menu.document.height
        menu.Top = menuH * -1 + 0
        document.flat.onmouseover = menuOut
        document.flat.onmouseout = menuIn
        menu.visibility = "visible"
    }
    else if (e4) {
        menu = flat.style
        menuH = flat.offsetHeight + 0//原25,到顶部的距离
        flat.style.pixelTop = menuH * -1 + 0
        btnQuery.onclick = fireOver
        document.all["btnCloseQuery"].onclick = fireOut
        flat.style.visibility = "visible"
    }
}
F_over = F_out = in_ID = out_ID = null
n4 = (document.layers) ? 1 : 0
e4 = (document.all) ? 1 : 0;
document.onload = init();

这是脚本

    <div class="FuJianHeaderDiv">
        <div id="rTitle" class="FuJianRightTitle">
        </div>
        <div class="FuJianHeaderBtnDiv">
            <div id="btnQuery" class="FuJianbtnDiv">
                显示统计条件</div>
        </div>
    </div>
    <div class="search" id="flat">
        <table cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
    中间省略了无关的代码
        </table>
    </div>

    <script src="../../../Scripts/Search.js" type="text/javascript"></script>