function ajax_(url) {    
    var xmlHttp,body;    
    try { // for firefox opera    
        xmlHttp = new XMLHttpRequest();    
    } catch (e) { // for ie    
        var ieVersions = new Array("MSXML2.XMLHTTP.6.0",    
                                   "MSXML2.XMLHTTP.5.0",    
                                   "MSXML2.XMLHTTP.4.0",    
                                   "MSXML2.XMLHTTP.3.0",    
                                   "MSXML2.XMLHTTP",    
                                   "Microsoft.XMLHTTP");  
        for (var i = 0; i < ieVersions.length; i ++) {
			if (xmlhttp) { break; }
            try {    
                xmlHttp = new ActiveXObject(ieVersions[i]);    
            } catch (e) {    
            }    
        }    
    }    
    if (!xmlHttp) {    
        return false;    
    }
    
        xmlHttp.open("GET",url,false);
        xmlHttp.send(null);
        
        if(xmlHttp.status==200)
        {
            body=xmlHttp.responseText;
        }

        return body;
}  

//Math.random()