Another issue:
getElementById() works only in IE, if I try to use Firefox this will not work, how to solve this issue?

thanks, that help me.

I have a form text field called "field_0", and javascript code:

<script language="javascript">
function test() {
var a=document.form1.field_0.value;
alert (a);
}
</script>
<form name=form1...

In html page I have two forms:
<form name=fm1 method=post action=aaa.html>
<input type=text name=a1>
<textarea name=a2></textarea>
<input type=submit>
</form>

<form name=fm2 method=post...

I can run the following javascript code succefully in IE browser:

<script language="JavaScript" type="text/JavaScript">
document.formname.submit();
</script>

this javascript automatically...