var d=document;var w=window;var p=parent;var Pref;

String.prototype.trim = function(){return this.replace(/(^\s*)|(\s*$)/g, "");}    
 
if(document.getElementById && navigator.userAgent.indexOf('Opera') < 0)
 Pref = 'document.getElementById(Id)';
else Pref = 'document.all[Id]';
 
function Wid(Id,Contents){eval(Pref+'.innerHTML = Contents;');}
 
function Widv(Id,Contents){eval(Pref+'.value = Contents');}
 
function Rido(Id){
 if(eval(Pref) != null)
  if(eval(Pref+'.selectedIndex')!=null && eval(Pref+'.selectedIndex') >= 0)
   return eval(Pref+'.options['+eval(Pref+'.selectedIndex')+'].text');
  else return null;
 else return null;}

function Ridv(Id){
 if(eval(Pref) != null)
  return eval(Pref+'.value');
 else return null;}

function Ridi(Id){
 if(eval(Pref) != null)
  return eval(Pref+'.innerHTML');
 else return null;}

function WStyle(Id,Name,Value)
{
 if(eval(Pref) != null){
  if(document.getElementById)
   eval(Pref+'.style.'+Name+' = "'+Value+'"');
  else if(d.layers)
   eval('document.'+Id+'.'+Name+' = "'+Value+'"');
  else
   eval(Id+'.'+Name+' = "'+Value+'"');}
 else return null;}