var DHTML = 0, DOM = 0, MS = 0, NS = 0, OP = 0;

function DHTML_init()
 {
  if(window.opera)
    OP = 1;
  if(document.getElementById)
   {
    DHTML = 1;
    DOM = 1;
   }
  if(document.all && !OP)
   {
    DHTML = 1;
    MS = 1;
   }
  if(document.layers && !OP)
   {
    DHTML = 1;
    NS = 1;
   }
 }

DHTML_init();