function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject();
var divlayer = '';

function sndReq(action,div) {
	//alert('ajax_subhandler.php?action='+action);
	divlayer = div;
    http.open('get', 'ajax_subhandler.php?action='+action);
    http.onreadystatechange = handleResponse;
    http.send(null);
}

function handleResponse() {
    if(http.readyState == 4){
        var response = http.responseText;
        document.getElementById(divlayer).innerHTML = response;
    }
}