var canSwitch = false;

if (parseInt(navigator.appVersion) >= 5 || navigator.userAgent.indexOf("MSIE") != -1) {

    canSwitch = true;

}



plus = new Image();     plus.src = "images/0/point_gw.gif";

minus = new Image();    minus.src = "images/0/point_gw.gif";



function show(kat, imgname){

if(canSwitch){

  var podmenu;

  if (podmenu = document.getElementById(kat)) {

	  var visible = (podmenu.style.display!='none');

	  if(visible){

    	  podmenu.style.display='none';

	  }else{

    	  podmenu.style.display='block';

	  }

  }

}

return false;

}