function clogin(obj){
var xhr=new XMLHTTPRequest();
xhr.onreadystatechange=function(){
if(xhr.readyState == 4){
if (xhr.status==200){
var xmlDoc=xhr.responseXML;
if (!xmlDoc || !xmlDoc.documentElement){alert (xhr.responseText);return;}
var _url = xmlDoc.getElementsByTagName('url')[0].firstChild.nodeValue;
if(_url=='') return;
window.location=_url;
}
}
}
params='task=';
if((typeof obj =='object') || (typeof obj == 'Object')){
if(obj.childNodes[2].lastChild.value=='' || obj.childNodes[3].lastChild.value=='') {alert('Du lieu rong!');return;	}
params+='1&username='+obj.childNodes[2].lastChild.value+'&password='+obj.childNodes[3].lastChild.value;
}else params+=obj;
sendRequestHttp(xhr,'login.php',params,"POST");
}
js = "js/common_func";
if(filename=='wysiwyg.php' || filename=='image.php') js="../js/common_func";
loadScript(js);