protected void cntct_submit_click(object sender, EventArgs e)
{
li.cntct_user1 = cntct_user1.Text;
li.cntct_email1 = cntct_email1.Text;
li.cntct_msg = cntct_msg.Text;
li.insert_contact(li);
cntct_user1.Text = null;
cntct_email1.Text = null;
cntct_msg.Text = string.Empty;
}