改变单行文本框边框的颜色

当2个fields差>=0时，边框变为红色。加一CalcTextfield 没起作用，求助。

var str = "<script>var ret = document.getElementsByName('fob_real_mt');";

var fobmill = getItemValueAsDouble("fob_mill_mt_fob");
var fob = getItemValueAsDouble("fob_real_mt");
var dif = fob-fobmill;

if(dif>=0){
str += "ret[0].style.border= '12px solid #FF0000' </script>";
}
str;

脚本这样改写：

(function(){
                var str ="";

var fobmill = getItemValueAsDouble("fob_mill_mt_fob");
var fob = getItemValueAsDouble("fob_real_mt");
var dif = fob-fobmill;

if(dif>=0){
str = "<script>var ret = document.getElementsByName('fob_real_mt');";
str += "ret[0].style.border= '12px solid #FF0000' </script>";
}
str;
        })();

还是没变颜色。请·帮忙远程看一下

用这个：
var str = "";

var fobmill = getItemValueAsDouble("fob_mill_mt_fob");
var fob = getItemValueAsDouble("fob_real_mt");
var dif = fob-fobmill;

if(dif>=0){
str +="<script>setTimeout(function(){var e = document.getElementsByName('fob_real_mt');e[0].style.border= '12px solid #FF0000';},2000);</script>";
}
str;

解决了。谢谢！！

好的，感谢反馈！