Hi,
You can try to use "Ordinal" parameter inside DESCRIPTION section like below:
web_button("INPUT FORM",
"Snapshot=t23.inf",
DESCRIPTION,
"Type=button",
"Tag=INPUT",
"ID=",
"Name=INPUT FORM",
"Ordinal=25",
ACTION,
"EvalJavaScript=this.document.getElementById('javascript:self.location=\'<url>'').value",
"EvalJavaScriptResultParam=myparam",
LAST);
Thanks,
Leonid.