javascript 代码：【复制】 
//id：上传控件ID    panelDiv：预览效果容器
function imgShow(id, panelDiv, width, height, submitID) {
    var img = $("#" + panelDiv + " img");
    var fileInput = document.getElementById(id);
    var panel = document.getElementById(panelDiv);
    panel.innerHTML = "";
    if (fileInput.value.split(''.'')[1] != "swf") {
        if (!fileInput.value.match(/.jpg|.gif|.png|.bmp/i)) {
            panel.innerHTML = "<span class="red fz16 fw600">文件格式不对！</span>";
            $("#" + submitID).attr("disabled", "disabled");
            return false;

        } else {
            $("#" + submitID).removeAttr("disabled");
        }
        panel.style.width = width = width == 0 ? "200px" : width;
        panel.style.height = height = height == 0 ? "120px" : height;
        if (fileInput.files && fileInput.files[0]) {
            img.attr({
                width: "auto",
                height: "auto",
                src: fileInput.files[0].getAsDataURL()
            }).show();
        } else if (panel.filters) {
            fileInput.select();
            var imgSrc = document.selection.createRange().text;
            panel.filters.item(''DXImageTransform.Microsoft.AlphaImageLoader'').src = imgSrc;
            //panel.style.display = "block";
        }
    } else {
        panel.innerHTML = "<span class="red fz16 fw600">不支持flash在线即时预览，您可以直接点击保存！</span>";
    }
}