function wop(url,wnd_name,width,height){w=window.open(url,wnd_name,'width='+width+',height='+height+',status=no,menubar=no,resizable=yes,scrollbars=yes,left='+String((screen.width-width)/2)+',top='+String((screen.height-height)/2));w.focus();return w;}

function checkForm(f)
{
	if (f['ElementName'].value == '') {
		alert('Ââåäèòå çàãîëîâîê');
		f['ElementName'].focus();
		return false;
	}
	if (f['message'].value == '') {
		alert('Ââåäèòå ñîîáùåíèå');
		f['message'].focus();
		return false;
	}
	return true;
}

function switchMes(id)
{
	var elem = document.getElementById('mes' + id);
	if (elem)
		elem.className = (elem.className == 'messhown')?'meshid':'messhown';
}

function checkAuth(f)
{
	if (f['login'].value == '') {
		alert('Ââåäèòå ëîãèí');
		f['login'].focus();
		return false;
	}
	if (f['pswd'].value == '') {
		alert('Ââåäèòå ïàðîëü');
		f['pswd'].focus();
		return false;
	}
	return true;
}

var Imgs = new Array();
function preLoad(srcs)
{
   if (!srcs) return false;
   if (srcs.length == 0) return false;
   for (var i in srcs) {
      var imgObj = new Image();
      imgObj.src = srcs[i];
      Imgs[i] = imgObj;
   }
}