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待验证码的登录页面

2009-07-27 16:20 323 查看
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>带验证码的登录页面</title>
<script language="javascript">
function veri(){
var sourcenum="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
var siglenum="";
var checknum="";
var index=0;
for(i=0;i<8;i++){
index=(Math.random()*100)%35;
siglenum=sourcenum.substring(index,index+1);
checknum+=siglenum;
i++;
}
document.form1.txt_ver.value=checknum;
}
</script>
</head>
<body onLoad="veri();">
<table width="422" border="0" align="center" cellpadding="0" cellspacing="0" background="images/lg_02.jpg" style="font-size:12px; color:#FFFFFF; font-weight:bold">
<tr>
<td height="91" colspan="2" background="images/lg_01.jpg"> </td>
</tr>
<tr>
<td width="120" height="200" align="center" valign="middle"><img src="images/lg_06.gif" width="28" height="27"></td>
<td height="200"><table width="98%" border="0" align="center" cellpadding="5" cellspacing="0">
<form name="form1">
<tr>
<td width="23%" height="22" align="right" class="font_white">管理员:</td>
<td width="77%" height="22"><input name="txt_name" type="text" class="textbox" id="txt_name" size="18" maxlength="50"></td>
</tr>
<tr>
<td height="22" align="right" class="font_white">密
码:</td>
<td height="22"><input name="txt_passwd" type="password" class="textbox" id="txt_passwd" size="19" maxlength="50"></td>
</tr>
<tr>
<td height="22" align="right" class="font_white">验证码:</td>
<td height="22"><input name="verifycode" id="verifycode" class="textbox" onFocus="this.select(); " onMouseOver="this.style.background='#E1F4EE';" onMouseOut="this.style.background='#FFFFFF'" size="6" maxlength="4">
<input name="txt_ver" type="text" id="txt_ver" size="4" readonly="ture"> </td>
</tr>
<tr>
<td height="22" colspan="2" align="center"><input name="login" type="submit" id="login" value="登 录" class="button">
     
<input type="reset" name="Submit2" value="重 置" class="button"></td>
</tr>
</form>
</table></td>
</tr>
<tr>
<td height="4" colspan="2" background="images/lg_03.jpg"></td>
</tr>
</table>
</body>
</html>
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