(document.layers) ? layerobject=true : layerobject=false;
 (document.all)?allobject=true:allobject=false;
  (document.getElementById)? dom=true:dom=false;
   var winExp = (window.RegExp) ? true : false;
    var oldobj;
	
	 function collapse(menuId) {
		  if (!winExp){return false;} var obj = getObject(menuId); 
		  if (!obj){return false;} 
		  if (obj.style.display == "none")
		  { 
 obj.style.display = "";
  oldobj=obj; }
  else { obj.style.display = "none"; } 
  return false; }; 
  function getObject(idname) {
	   var obje;
	    if(layerobject){obje=document.layers[idname];} 
		else if(allobject){obje=document.all[idname];}
		 else if(dom){obje=document.getElementById(idname);} return obje; };