//ajax
   function ajaxCount()  
   {    
        var oXmlHttp = getHttpRequest() ;
        var url_str = "/visit_count.aspx?_t=" + new Date().getTime();
        oXmlHttp.open( "GET", url_str, true ) ;
        //alert('hello world');
        oXmlHttp.onreadystatechange = function()
		{
			if (oXmlHttp.readyState == 4 )
			{
			   if(oXmlHttp.status==200){
			     // targetUrl = oXmlHttp.responseText;
			     //alert("good:"+targetUrl);
			     //alert(oXmlHttp.responseText);
			     document.getElementById("v_counts").innerHTML = oXmlHttp.responseText;
			   }
			   else{
                  alert('bad:'+oXmlHttp.statusText)
                   }
				
			}//end if readyState == 4
		}
	
	    oXmlHttp.send( null ) ;
        return true;
     }
     
     function  getHttpRequest()
    {
	// Gecko / IE7
	try { return new XMLHttpRequest(); }
	catch(e) {}

	// IE6
	try { return new ActiveXObject( 'Msxml2.XMLHTTP' ) ; }
	catch(e) {}

	// IE5
	try { return new ActiveXObject( 'Microsoft.XMLHTTP' ) ; }
	catch(e) {}

	return null ;
	}