Keeping Page In Same Place After Form Submission?

I would like the page to not refresh and jump to the top of the page after they submit there answer. So on questions that use radio buttons I have been using

<input type="submit" value="Submit" onclick="get_radio_value(); return false;" />

for the submit buttion and that works perfect. I try and use it on questions that use checkboxes and it doesnt work so as a work around I am using the form's action attribute to set it to a link on the page. Here is my form code:

<form name="question2" action="#q2">2. <strong>Multiple choice:</strong><a name="q2"></a> Which patient or patients could be transferred to another hospital under the EMTALA Act?<br /> <input type="checkbox" value="a" name="aquestion" />Smith, Bill<br /><input[code]....