js实现复制到剪切板

// <![CDATA[
    function copy_clip(copy)
    {
        if (window.clipboardData)
        {
            window.clipboardData.setData("Text", copy);
        }
        else if (window.netscape)
        {
            netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
            var clip = Components.classes['@@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
            if (!clip) return;
            var trans = Components.classes['@@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
            if (!trans) return;
            trans.addDataFlavor('text/unicode');
            var str = new Object();
            var len = new Object();
            var str = Components.classes["@@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
            var copytext = copy;
            str.data = copytext;
            trans.setTransferData("text/unicode", str, copytext.length * 2);
            var clipid = Components.interfaces.nsIClipboard;
            if (!clip) return false;
            clip.setData(trans, null, clipid.kGlobalClipboard);
        }
        alert("Successfully copied");
        return false;
   }
    // ]]>

　　用法:

<img src="@Url.Content("~/Content/images/copycode.gif")" onclick="copy_clip($('#txtaddress').html());" class="info-img"/>
        <p class="info-font-content" style=" 150px; color: #5F5F5F;" id="txtaddress">28320 Parcells Rd NE Kingstorn, WA 98346</p>