20100929

1、

parent.jsp

---start----

<iframe name="inframe">

 

 

inframe.document.forms[0].ids == null

 

----end---

 

 

child.jsp

parent.document.forms[0].serialNo.value;

 

 

2、

var val = xmlHttp.responseText;
   // setMessageOld(val);
   var e = document.getElementById("seriesCode");
   var td = e.parentNode;
   
   var spans = td.getElementsByTagName("span");
   
   if (spans&&spans.length > 0)
   {
     for(var i = 0; i < spans.length; i++)
     {
      td.removeChild(spans[i]);
     }
   }
         var error = document.createTextNode(val);
         var span = document.createElement("span");
         span.setAttribute("class", "errorMessage");
         span.setAttribute("className", "errorMessage"); //ie hack cause ie does not support setAttribute
         span.appendChild(error);
         td.appendChild(span);