Return the name of the form that contains dropdown list (combobox)
<html> <head> <script type="text/javascript"> function formAction(){ var x=document.getElementById("mySelect") alert(x.form.name) } </script> </head> <body> <form name="myForm"> <select id="mySelect"> <option>Apple</option> <option>Banana</option> <option>Orange</option> </select> <input type="button" onclick="formAction()" value="Show name of the form"> </form> </body> </html>