oEditor.FCKSelection.GetSelectedElement(); 
oEditor.FCK.InsertHtml("<br />");

FCKCommands.RegisterCommand('htmlcode',new FCKDialogCommand( 'htmlcode', FCKLang.htmlcodeBtn, FCKPlugins.Items['htmlcode'].Path + 'fck_htmlcode.html', 500, 420 ) ) ; 
var ohtmlcode=new FCKToolbarButton('htmlcode',FCKLang.htmlcodeBtn); 
ohtmlcode.IconPath=FCKPlugins.Items['htmlcode'].Path+'htmlcode.GIF'; 
FCKToolbarItems.RegisterItem('htmlcode',ohtmlcode); 

//創建用于所htmlcode操作的對象 
var FCKhtmlcode = new Object() ; 

// 這個添加的方法將在彈出窗口點擊ok按鈕時被調用。 
// 該方法將會接收從對話框中傳來的值。 

FCKhtmlcode.Add = function(strtemp,str) 
{ 
FCK.InsertHtml("["+str+"]<br>"+strtemp+"<br>[/"+str+"]") ; 
}