Get this form's attributes on a form submit even handler function
===

I want to be able to get one of the forms attributes (the `url` attribute), and save it as a variable on submit. I'm also having issues with getting the values from the comment box.

Here is my form in HTML:

    <form action="" url="comments/12/3/addcomment" method="post">
    	<textarea name="commentField">Write your comment here...</textarea>
    	<p align="center">
    		<input type="submit" class="form-button" value="Submit Comment" />
    		<input type="button" class="form-button" values="Cancel" />
    	</p>
    </form>

Here is my current javascript:

    $('.comment_form').submit(function() { 
    	alert("Working!"); // "Working!"
    	var urlAttr = $(this).attr("url"); // Want to get the 'url' contained in the form tag. 
    	alert(urlAttr); // undefined
    	var dataString = 'comment=' + $("textarea#").value(); // want to get everything from the comment box
    	alert(dataString) // No message at all here. 
    });

 Thanks for your help. 
