function on(a){
	document.getElementById('bg').src="/templates/beltelomash/images/bg"+a+".jpg";
	document.getElementById('mn'+a).className="mnCatA";
}
function off(a){
	//document.getElementById('bg_'+a).src="/templates/beltelomash/images/bg+"a"+.gif";
	document.getElementById('mn'+a).className="mnCat";
}
function offBG(){
	document.getElementById('bg').src="/templates/beltelomash/images/bg1.jpg";
}
function show_tree(_obj) {
    var rev = /pl.gif/;
    var elem = _obj;

   	while (elem.id == '' && elem.tagName != "BODY") {
   		elem = elem.parentNode;
   	}
   	id = elem.id;
   	
   	elem = elem.nextSibling;
    if (rev.test(_obj.src)) {
		_obj.src = '/templates/beltelomash/images/min_b.gif';
	  	elem.style.display = 'block';
    } else {
		_obj.src = '/templates/beltelomash/images/pl.gif';
		elem.style.display = 'none';
    }
}