var NS = (navigator.appName.indexOf("Netscape")!=-1);
var MS = (navigator.appName.indexOf("Microsoft")!=-1);
var VER=parseInt(navigator.appVersion);
var CSS=((MS&&VER>=4)||(NS&&VER>=5));
var IE4=(MS&&VER==4);
var KFall_close = 1;


function CatOpen(id)
{
	el = IE4 ? eval('Cat'+id) : document.getElementById('Cat'+id);
	if (el) {
		el.style.display = el.style.display=='none'?'block':'none';
		return false;
	}
	return true;
}