var http_request = false;
      function makeRequest(url, parameters) {
          http_request = false;
	      if (window.XMLHttpRequest) { // Mozilla, Safari,...
	    	 http_request = new XMLHttpRequest();
			 if (http_request.overrideMimeType) {
				    // set type accordingly to anticipated content type
						//http_request.overrideMimeType('text/xml');
							    http_request.overrideMimeType('text/html');
								     }
								          } else if (window.ActiveXObject) { // IE
										 try {
											    http_request = new ActiveXObject("Msxml2.XMLHTTP");
												     } catch (e) {
												    	    try {
															   http_request = new ActiveXObject("Microsoft.XMLHTTP");
																    } catch (e) {}
																	     }
																	          }
																		      if (!http_request) {
																		    	 alert('Cannot create XMLHTTP instance');
																				 return false;
																				      }
																				          http_request.onreadystatechange = alertContents;
																					      http_request.open('GET', url + parameters, true);
																					          http_request.send(null);
																						     }
																						        function alertContents() {
																							      if (http_request.readyState == 4) {
																							    	 if (http_request.status == 200) {
																									    //alert(http_request.responseText);
																											result = http_request.responseText;
																												    document.getElementById('myspan').innerHTML = result;
																														//Get a reference to CAPTCHA image
																															    img = document.getElementById('imgCaptcha');
																																	//Change the image
																																		    img.src = 'create_image.php?' + Math.random(); // Search for new image
																																				document.getElementById('txtCaptcha').value=''; //Reset input Captcha  after succes return 
																																					 } else {
																																						    alert('There was a problem with the request.');
																																							     }
																																							          }
																																								     }
																																								        function get(obj) {
																																									      var getstr = "?" +
																																									    	    "&mytextarea=" + encodeURI( document.getElementById("mytextarea").value) +
																																												"&txtCaptcha=" + encodeURI( document.getElementById("txtCaptcha").value) ;
																																												      makeRequest('get.php', getstr);
																																												         }
																																													 // IMAGE REFRESHING
																																													 function refreshimg()
																																													 {
																																													    //Get a reference to CAPTCHA image
																																														img = document.getElementById('imgCaptcha');
																																														    //Change the image
																																															img.src = 'create_image.php?' + Math.random();
																																															}