//主JS
function $(a){
	document.write(a);
}
function   GetCookie(cookieName){   
  var   cookieString   =   document.cookie;   
  var   start   =   cookieString.indexOf(cookieName   +   '=');   
  if   (start   ==   -1) 
  return   null;   
  start +=   cookieName.length   +   1;   
  var   end   =   cookieString.indexOf(";",   start);   
  if   (end   ==   -1)   return   unescape(cookieString.substring(start));   
  return   unescape(cookieString.substring(start,   end));   
}  
function my_getbyid(id)
{
   itm = null;
   if (document.getElementById)
   {
      itm = document.getElementById(id);
   }
   else if (document.all)
   {
      itm = document.all[id];
   }
   else if (document.layers)
   {
      itm = document.layers[id];
   }
   
   return itm;
}