check form by javascript

[y_com7]

Hi , I have problem with javascript .
I'm use javascript to check form befor submit
but it not complete

my data form:

<form method="post" name="frmcs">
<input type="radio" name="T1" value="A">
<input type="radio" name="T1" value="B">
<input style="BACKGROUND:#FFCC00;" class="sbttn" type="button" name="btnSubmit" value=" Submit " onclick="checkFrm(document.frmCS)">
</form>


<SCRIPT LANGUAGE="JavaScript">
function checkFrm(f){
str = f.T1.value;
alert(str);
return

}

</SCRIPT>

[Angelika]

Validate Form Data Onsubmit :

http://www.js-examples.com/example/?ex=443&mode=1&COLOR_OFF=YES