// JavaScript Document
function copyToClipboard(txt) {
	if(window.clipboardData) {
		window.clipboardData.clearData();
		window.clipboardData.setData("Text", txt);
		alert("复制成功！");
	} else if(navigator.userAgent.indexOf("Opera") != -1) {
		window.location = txt;
	} else if (window.netscape) {
		try {
			netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
		} catch (e) {
			alert("您的firefox安全限制限制您进行剪贴板操作，请打开'about:config'将signed.applets.codebase_principal_support'设置为true'之后重试");
			return false;
		}
		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 = txt;
		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);
	}
}