Code to Reset/Clear all the controls using JavaScript

This function will reset/clear all the controls of the page.

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 "textarea" :
                        doc.value = "";
                        break;
                  case "checkbox" :
                        doc.checked = false;
                        break;    
                  case "radio" :
                        doc.checked = false;
                        break;                
                  case "select-one" :
                        doc.selectedIndex = 0;
                        break;                      
                  case "select-multiple" :
                        while (doc.selectedIndex != -1) 
                        {
                              indx = doc.selectedIndex;
                              doc.options[indx].selected = false;
                        }
                        doc.selected = false;
                        break;
                            
                  default :
                        break;
            }
       }
   }