var xmlHttp

function showform(name, str, page, div)
{
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url=page
url=url+"&"+name+"="+encodeURIComponent(str)
url=url+"&sid="+Math.random()
this.div = div
xmlHttp.onreadystatechange=stateChanged
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}

function stateChanged()
{
 if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 {
 if(this.txtHint == '')
	 txtHin = 'div';
else
	txtHin = this.div;
 document.getElementById(div).innerHTML=xmlHttp.responseText
 }
}

function GetXmlHttpObject()
{
var xmlHttp=null;

try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 // Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}


//********** post ******************
   var http_request = false;
   function makePOSTRequest(url, parameters, div_id) {
      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(){
 		if (http_request.readyState==4 && http_request.status==200){
    	document.getElementById(div_id).innerHTML=http_request.responseText;
    	}
  	  }
      //http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }