function clearForm(form) {   // iterate over all of the inputs for the form   // element that was passed in   $(':input', form).each(function() {     var type = this.type;     var tag = this.tagName.toLowerCase(); // normalize case     // it's ok to reset the value attr of text inputs,     // password inputs, and textareas     if (type == 'text' || type == 'password' || tag == 'textarea')       this.value = "";     // checkboxes and radios need to have their checked state cleared     // but should *not* have their 'value' changed     else if (type == 'checkbox' || type == 'radio')       this.checked = false;     // select elements need to have their 'selectedIndex' property set to -1     // (this works for both single and multiple select elements)     else if (tag == 'select')       this.selectedIndex = -1;   }); };