var http_request = false;
var layername='ajaxcontent';
var thiselem;

function loadPage(url, param, value, fcn, ln) {

     if(ln) layername=ln;
     else layername='ajaxcontent';
     value = value + "";

     if(value.length>0)
     {   
        http_request = false;
        if (window.XMLHttpRequest) { // Mozilla, Safari,...
            http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) {
                http_request.overrideMimeType('text/xml');
            }
        } 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('Giving up :( Cannot create an XMLHTTP instance');
            return false;
        }
        
        http_request.onreadystatechange = fcn;
        http_request.open('GET', url+"?"+param+"="+value, true);
        http_request.send(null);
    }
}

    
function  updateLayer()
{			
    if (http_request.readyState == 4 && http_request.status == 200)
    {
		var object= document.getElementById(layername);
		object.innerHTML = http_request.responseText;


	}
}