var minFont=8;
var maxFont=18;
function increaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i =0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 14;
      }
      if(s!=maxFont) {
         s += 1;
      }
      p[i].style.fontSize = s+"px"
   }
}
function decreaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 14;
      }
      if(s!=minFont) {
         s -= 1;
      }
      p[i].style.fontSize = s+"px"
   }
}
function PrintPage() {
  window.print();
}
function getBrowserInfo() {
 var t,v = undefined;
 if (window.opera) t = 'Opera';
 else if (document.all) {
  t = 'IE';
  var nv = navigator.appVersion;
  var s = nv.indexOf('MSIE')+5;
  v = nv.substring(s,s+1);
 }
 else if (navigator.appName) t = 'Netscape';
 return {type:t,version:v};
}

function bookmark(a){
 var url = window.document.location;
 var title = window.document.title;
 var b = getBrowserInfo();
 if (b.type == 'IE' && 8 >= b.version && b.version >= 4) window.external.AddFavorite(url,title);
 else if (b.type == 'Opera') {
  a.href = url;
  a.rel = "sidebar";
  a.title = url+','+title;
  return true;
 }
 else if (b.type == "Netscape") window.sidebar.addPanel(title,url,"");
 else alert("Нажмите CTRL-D, чтобы добавить страницу в закладки.");
 return false;
}
function loadXMLDoc() {

  var data;

  data = 'to=' + document.send.to.value + '&from=' + document.send.from.value + '&note=' + document.send.note.value + '&id=' + document.send.id.value;
  url = "ajax_send.php";

  var dataL = data.length;

  if (window.XMLHttpRequest) {
    req = new XMLHttpRequest();
    req.onreadystatechange = processReqChange;
    req.open('POST', url, true);
    req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    req.setRequestHeader("Content-Length", dataL);
    req.send(data);
  } else if (window.ActiveXObject) {
    req = new ActiveXObject("Microsoft.XMLHTTP");
    if (req) {
      req.onreadystatechange = processReqChange;
      req.open('POST', url, true);
      req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
      req.setRequestHeader("Content-Length", dataL);
      req.send(data);
    }
  }
}
function processReqChange() {
  var response;
  if (req.readyState == 4) {
    if (req.status == 200) {

      response = req.responseText;
      // document.getElementById('main_results').innerHTML = response;
      document.getElementById('link').style.display = 'none';

    }
  }
}