Weblabor

function sendRequest(url) {
  try { req = new XMLHttpRequest(); }
  catch (e) { try { req = new ActiveXObject('Msxml2.XMLHTTP'); }
  catch (e) { try { req = new ActiveXObject('Microsoft.XMLHTTP'); }
  catch (e) { req = null; return; }}}
  
  req.open("POST", url, true);
  req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  req.onreadystatechange = function() {
      if (req.readyState == 4) {
        if (req.status == 200) {
          setPicture( req.responseText );
        }
      }
    };
  req.send(null);
}

function setPicture(value) {
    var item=document.getElementById("mapimg");
    item.style.left=0+'px';
    item.style.top=0+'px';
    item.onerror = function(e){
        alert("Error processing Image.  Please try again.");
    }
    item.src=value;
}

function MouseUp(e)
{
    var map=document.getElementById("map");
    item.src=sendRequest("fejlec1.jpg");
}