function link(url)
{
	url = 'content/'+url;
	openurl(url, 'main');
	var testmess = new RegExp ("message.php");
	if (testmess.test(url))
	{
		openurl('content/mess_menu.php', 'mess_menu');
	}
}
function openurl(url, into)
{
	var xhr; 
    try {  xhr = new ActiveXObject('Msxml2.XMLHTTP');   }
    catch (e) 
    {
        try {   xhr = new ActiveXObject('Microsoft.XMLHTTP');    }
        catch (e2) 
        {
          try {  xhr = new XMLHttpRequest();     }
          catch (e3) {  xhr = false;   }
        }
     }
 
    xhr.onreadystatechange  = function()
    { 
         if(xhr.readyState  == 4)
         {
              if(xhr.status  == 200) 
                 document.getElementById(into).innerHTML=xhr.responseText;
              else 
                 document.write(xhr.status);
         }
    }; 

   xhr.open("GET", url,  true); 
   xhr.send(null); 
}