function $(id){
	return document.getElementById(id);
}

function _trim(s)
{
  return _rtrim(_ltrim(s));
}

function _ltrim(s)
{
  return s.replace(/^\s+/, ''); 
}

function _rtrim(s)
{
  return s.replace(/\s+$/, ''); 
}

function redirect(url){
window.location.href=url;
}

//Добавить событие на onload
function addLoadEvent(func) { 
	var oldonload = window.onload; 
	if (typeof window.onload != 'function') { 
	    window.onload = func; 
	} else { 
		window.onload = function() { 
			if (oldonload) { 
				oldonload(); 
			} 
			func(); 
	    } 
	} 
}