function ajaxPlus(str) { 
//alert(str);
 	var xmlhttp; 
    try { 
        xmlhttp=new XMLHttpRequest(); 
    } 
    catch (e) { 
        try { 
            xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); 
        } 
          catch (e) { 
            try { 
                xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); 
            } 
            catch (e) { 
                alert("Your browser does not support AJAX!"); 
                return false; 
            } 
        } 
    }
    
    var url='/member/lecture/review?plus='+str; 
    xmlhttp.onreadystatechange=function() { 
        if(xmlhttp.readyState==4) { 
            document.getElementById('count_'+ str).innerHTML=xmlhttp.responseText; 
          } 
    } 
    xmlhttp.open("GET",url,true); 
    xmlhttp.send(null); 
}

function ajaxMinus(str) { 
//alert(str);
	var xmlhttp; 
    try { 
        xmlhttp=new XMLHttpRequest(); 
    } 
    catch (e) { 
        try { 
            xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); 
        } 
          catch (e) { 
            try { 
                xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); 
            } 
            catch (e) { 
                alert("Your browser does not support AJAX!"); 
                return false; 
            } 
        } 
    }
    
    var url='/member/lecture/review?minus='+str; 
    xmlhttp.onreadystatechange=function() { 
        if(xmlhttp.readyState==4) { 
            document.getElementById('count_'+ str).innerHTML=xmlhttp.responseText; 
          } 
    } 
    xmlhttp.open("GET",url,true); 
    xmlhttp.send(null); 
}