var x = window;
function openWin(url,name,w,h,option) {
   if ((x == window) || x.closed) {
	Str = "width=" + w;
	Str+= ",height=" + h;
	if(option)Str+= "," + option;
       x = window.open(url, name, Str);
   } else {
      x.focus();
   }
      return(false);
}