[Label] hover effort by using event

def callback_text(event):
    txt_keyword = event.widget.cget("text")
    idx_start = txt_keyword.find("https")
    idx_end = len(txt_keyword) - 1
    url = txt_keyword[idx_start : idx_end]
    webbrowser.open_new(url)
    event.widget.config(text = "X |" + txt_keyword)


def changeBGLeave(event):
    event.widget.config(fg="red")

def changeBGEnter(event):
    event.widget.config(fg="blue")




            lbl = Label(root,  text = txt_content , fg="blue", cursor="hand2")          
            lbl.pack(anchor="w")
            lbl.bind("<Button-1>", callback_text)
            lbl.bind("<Enter>",changeBGLeave)
            lbl.bind("<Leave>",changeBGEnter)


http://stackoverflow.com/questions/4299145/getting-the-widget-that-triggered-an-event