типо такого?
<html>
<head>
<title>example</title>
</head>
<body>
<input type='button' value='форма' class="mybutton" namefile="myfile1.txt"><br>
<input type='button' value='форма' class="mybutton" namefile="myfile2.txt"><br>
<input type='button' value='форма' class="mybutton" namefile="myfile3.txt"><br>
<input type='button' value='форма' class="mybutton" namefile="myfile4.txt"><br>
<script src="http://code.jquery.com/jquery-1.10.2.js"></script>
<!--<script src="http://code.jquery.com/ui/1.11.0/jquery-ui.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.11.0/themes/smoothness/jquery-ui.css">-->
<script>
$('.mybutton').click(function ()
{
console.log($(this).attr('namefile'));
})
</script>
</body>
</html>