function loginSubmit(form1){
var userName = form1.elements['UserName'];
var password = form1.elements['UserPassword'];
var Ncode = form1.elements['Ncode'];
if(userName.value == ""){alert("请输入用户名");userName.focus();return false}
if(password.value == ""){alert("请输入密码");password.focus();return false}
if(Ncode.value == ""){alert("请输入验证码");Ncode.focus();return false}
location.href="?usrname="+userName.value;
}
document.write("<form id='form1' name='form1' method='post' action='login.aspx?flag=login' onsubmit='return loginSubmit(this);'><table width='219' border='0' cellspacing='0' cellpadding='0'><tr><td height='125'><table width='100%' border='0' cellspacing='0' cellpadding='0'><tr><td height='24' align='right'>用户名:</td><td width='38%' align='left'><input name='UserName' id='UserName' type='text' size='10' /></td><td width='31%' rowspan='2'>&nbsp;</td></tr><tr><td height='24'><div align='right'>密&nbsp;&nbsp;码:</div></td><td align='left' width='38%'><input name='UserPassword' id='UserPassword' type='password' size='10' /></td></tr><tr><td height='24'><div align='right'>验证码:</div></td><td width='38%' align='left'><input name='Ncode' type='text'  id='Ncode' size='4' maxlength='4' /></td><td><img id='Image1' src='admin/Image.aspx' style='cursor:hand;height:21px;border-width:0px;' /></td></tr><tr><td height='24'><div align='right'><img src='Skin/skin5/images/ico01.gif' width='21' height='13' /><a href='usercenter/regnext.aspx'>注册</a></div></td><td colspan='2'><input type='image' name='imageField' src='Skin/skin5/images/login2.gif' /><img src='Skin/skin5/images/ico02.gif' width='21' height='13' /><a href='UserCenter/FindPass.aspx'>忘记密码</a></td></tr></table></td></tr></table></form>")