isDOM=document.getElementById;
isMSIE=document.all && document.all.item;
isNetscape4=document.layers;
isOpera=window.opera;
isOpera5=isOpera && isDOM;
isMSIE5=isDOM && isMSIE && !isOpera;
isMozilla=isDOM && !isMSIE && !isOpera;
isFirefox=(navigator.userAgent.indexOf("Firefox")!=-1) ? true : false;
isNetscape6=isDOM && !isMSIE && !isOpera && !isFirefox;

clientPC=navigator.userAgent.toLowerCase();
clientVer=parseInt(navigator.appVersion);
is_win=((clientPC.indexOf("win")!=-1) || (clientPC.indexOf("16bit") != -1));
is_mac=(clientPC.indexOf("mac")!=-1);
var objPopup=null;

function tover(wh) {
	wh.className='slct';
}
function tout(wh,cls) {
	wh.className=cls;
}
function show_forum(wh) {
	if (document.getElementById(wh).style.display=='block') {
		document.getElementById(wh).style.display='none';
	} else {
		document.getElementById(wh).style.display='block';
	}
}
function um(s) {
	var n=0;
	var r="";
	for(var i=0;i<s.length;i++) {
		n=s.charCodeAt(i);
		r+=String.fromCharCode(n-(2));
	}
	r='<a href="mailto:'+r+'" target="_blank">'+r+'</a>';
	return r;
}
function wt() {
	var chref=window.location.href;
	if (chref.indexOf('#')!=-1) {
		chref=chref.substring(0,chref.indexOf('#'));
	}
	document.write('<a href="'+chref+'#top" title="Наверх">');
	document.write('<img src="http://tpl.gt-bratsk.ru/images/top.gif" width="9" height="5" alt="Наверх" style="margin-right:10px;" />');
	document.write('</a>');
}