document.body.oncopy = function () { 
	   setTimeout( 
	       function () {
	       		try { 
	            var text = clipboardData.getData("text"); 
	            if (text) { 
	                 text = text + " / 做中国最大的买房卖房网站-超级经纪人："+location.href; clipboardData.setData("text", text); 
	                 }
	            }catch (e) {} 
	         }, 100 ) }

function copyToClipboard(txt) {
	txt = txt+" / 做中国最大的买房卖房网站-超级经纪人："+location.href;
      if(window.clipboardData) {
              window.clipboardData.clearData();
              window.clipboardData.setData("Text", txt);
      } else if(navigator.userAgent.indexOf("Opera") != -1) {
           window.location = txt;
      } else if (window.netscape) {
           try {
                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
           } catch (e) {
                alert("浏览器拒绝自动复制！");
           		return ;
           }
           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);
      }
} 
function nocopy(){
alert("受保护内容，不予复制。");   
event.returnValue=false;   
}