function showlayer(s)
  {
  //ss = s +1;
	 var elm = document.getElementById('buttonhighlight');
	 var hidfild = document.getElementById('hidfield');
	// hidfild.value = ss;
	  hidfild.value = s;
     width=document.body.clientWidth; // ширина  
     height=document.body.clientHeight; // высота  
      xline = (document.body.clientWidth / 2) - 200;
      yline = (document.body.clientHeight / 2) - 150; 
	  
   var elm = document.getElementById('buttonhighlight');
   var formel = document.getElementById('forme');
   
 if (elm.style.visibility=="visible")
             {elm.style.visibility="hidden"; }
          	else {		
			formel.action = formel.action;
			elm.style.visibility="visible";
			//elm.style.display="block";
			if (navigator.appName != "Microsoft Internet Explorer") 
			elm.style.top = yline+"px";
			elm.style.left = xline+"px";
			}
   }