document.write("<form method='post' action='/user/userlogin.asp' style='vertical-align:middle; '> ")
    document.write("用户名: ")
    document.write("<input type='text' name='username'  class='input1' /> ")
    document.write("密码: ")
    document.write("<input name='password' type='password' class='input1' /> ")
    document.write("<input type='image'  src='/newstyle/2/images/denglu.gif' style='position:relative; top:6px;' /> ")
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    document.write("</form>")