File: fwphp/glomodul/z_examples/AJAX_form_valid/clear_form/demo1.js

function clearForm(oForm) {
    
  var elements = oForm.elements; 
    
  oForm.reset();

  for(i=0; i<elements.length; i++) {
      
	field_type = elements[i].type.toLowerCase();
	
	switch(field_type) {
	
		case "text": 
		case "password": 
		case "textarea":
	        case "hidden":	
			
			elements[i].value = ""; 
			break;
        
		case "radio":
		case "checkbox":
  			if (elements[i].checked) {
   				elements[i].checked = false; 
			}
			break;

		case "select-one":
		case "select-multi":
            		elements[i].selectedIndex = -1;
			break;

		default: 
			break;
	}
    }
}