var http_request = false;
   function ajaxChangeDiv(url,divId) {
      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 =function(){
        ajaxContents(divId);
      }
      http_request.open('GET', url, true);
      http_request.send(null);
	  return false;
   }
      function ajaxContents(divId) {
    if (http_request.readyState == 4 && (http_request.status==200 || window.location.href.indexOf("http")==-1)) {
            document.getElementById(divId).innerHTML =http_request.responseText;            
         }
   }
   
   function ajaxBuildForm(form) {
	 /*form = document.getElementById(formId);*/
     var getstr = "";
     for (i=0; i<form.elements.length; i++) {
	   if (form.elements[i].type == "checkbox") {
	     if (form.elements[i].checked == true) {
	       getstr += form.elements[i].name + "=" + escape(encodeURI( form.elements[i].value )) + "&";
		 }
	   } else {
	     getstr += form.elements[i].name + "=" + escape(encodeURI( form.elements[i].value )) + "&";
	   }
	 }
     return getstr;
   }