function CheckForm()
    {
        var formpwd=document.getElementById("form1");
        if(!checkEmpty(formpwd.txtsOldPwd,'请输入旧密码'))return false;
       if(!checkEmpty(formpwd.txtsPwd,'请输入新密码'))return false;
       if(!checkEmpty(formpwd.txtsCheckPwd,'请输入确认密码'))return false;
       if(!checkAccount(formpwd.txtsOldPwd,'密码只能输入字母或数字'))return false;
        if(formpwd.txtsPwd.value.length<6||formpwd.txtsPwd.value.length>18)
       {
        alert("密码长度必须在6到18位之间");return false;
       }
        if(formpwd.txtsPwd.value!=formpwd.txtsCheckPwd.value)
        {
            alert("两次输入密码不一致，请重新输入");return false;
        }
        return true;
     }
        function Rewrite_onclick() {
        document.getElementById("txtsOldPwd").value="";
        document.getElementById("txtsPwd").value="";
        document.getElementById("txtsCheckPwd").value="";
        }