Undefined Error--Please Help

[rked]

function validField() //this is to be sure something is in subject
{
if (document.formDoubleMenuDMA.strSubject.value == "")
{ nameSPAN1.innerHTML = "Please select a subject";
nameSPAN1.style.color='#FF0000';
alert("Please Enter A Subject");
return false; }
else
{ nameSPAN1.innerHTML = "";
return true; }
}
//above refers to below

<select name="strSubject" onblur="validField()" style="width:300">
<span ID="nameSPAN1" style="font-size:8pt;font-face:verdana" ></span>

I get "nameSpan1" is undefined. I was advised to use getelementbyid but
im not sure how to use it...thankyou!

 

[SPG]

you could use:

var nameSPAN = document.all("nameSPAN1");
nameSPAN.innerHTML = "Please select a subject";
.....

or
var nameSPAN =document.getElementById("nameSPAN1");
nameSPAN.innerHTML = "Please select a subject";

etc..

HTH,

Steve