Simple and easy way to clear all the input fields in the form.

<script language="javascript" type='text/javascript'>
 
        function ClearAllControls() 
        {
              for (i=0; i<document.forms[0].length; i++)
              {
                    doc = document.forms[0].elements[i];
                    switch (doc.type) 
                    {
                        case "text" :
                                doc.value = "";
                                break;
                          case "checkbox" :
                                doc.checked = false;
                                break;    
                          case "radio" :
                                doc.checked = false;
                                break;                
                          case "select-one" :
                                doc.options[doc.selectedIndex].selected = false;
                                break;                      
                          case "select-multiple" :
                                while (doc.selectedIndex != -1) 
                                {
                                      indx = doc.selectedIndex;
                                      doc.options[indx].selected = false;
                                }
                                doc.selected = false;
                                break;
                                    
                          default :
                                break;
                    }
              }
        }
 
</script>