function fold(id,id2)
{
	el=document.getElementById(id);
    el2=document.getElementById(id2);
	if(el.className=="off")
		 {el.className="on"
		  if(el2){el2.src="tri_t.gif"}
		 }else
		 {el.className="off"
		  if(el2){el2.src="tri_d.gif"}		 
		 }
}

function other()
{
oth=document.getElementById('notr');
oth.disabled=!oth.disabled;
if(!oth.disabled){oth.focus();}
}

function filer(obj)
{document.getElementById('file').disabled=obj.id!='r2'}

function pop(url, h, w) {
	var w = window.open(url, "pop",
                    "width=" + w +",height=" + h + ",status=yes,resizable=yes"); 
	w.focus();
}

document.getElementsByClassName = function(className) {
  var children = document.getElementsByTagName('*') || document.all;
  var elements = new Array();
  
  for (var i = 0; i < children.length; i++) {
    var child = children[i];
    var classNames = child.className.split(' ');
    for (var j = 0; j < classNames.length; j++) {
      if (classNames[j] == className) {
        elements.push(child);
        break;
      }
    }
  }
  
  return elements;
}

function chk() {
	var flag = true;
	var cnt = 0;
	var chbox = new Array();
	var els = document.getElementsByClassName('check_error'); 
	var j;
	for (var i=0; i< els.length; i++) {
		j = els[i].className.length;
		els[i].className = els[i].className.substr(0, j - 12);
	}
	var els = document.getElementsByClassName('required'); 
	for (var i=0; i< els.length; i++) {
		if (els[i].value == '') {
			flag = false;
			els[i].className += ' check_error';
		} else if(els[i].type == 'checkbox') {
			chbox[chbox.length] = els[i];
			if(els[i].checked) cnt ++;
		} 
	}

	if(chbox.length > 0 && !cnt) {
		flag = false;
		for(i = 0; i< chbox.length; i++) {
			chbox[i].className +=' check_error';
		}		
	}


	if(!flag) alert('Заповнить обов\'язкові поля');
	return flag;
}

function regform() {
	var el = document.getElementById("regform");
	
	var newEl = document.createElement('input');
	newEl.setAttribute('type', 'hidden');
	newEl.setAttribute('name', 'submit');
	newEl.setAttribute('value', 'forum');

	el.appendChild(newEl);
}