// JavaScript Document
var req;
function graburl_ajax_connect(url , method , params) 
{
    // branch for native XMLHttpRequest object
    if(window.XMLHttpRequest && !(window.ActiveXObject)) {
    	try {
			req = new XMLHttpRequest();
        } catch(e) {
			req = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
       	try {
        	req = new ActiveXObject("Msxml2.XMLHTTP");
      	} catch(e) {
        	try {
          		req = new ActiveXObject("Microsoft.XMLHTTP");
        	} catch(e) {
          		req = false;
        	}
		}
    }
	if(!req) return false;
	
	 req.onreadystatechange = graburl_ajax_statechange;
	method = method ? method : 'GET';
	req.open(method , url , true);
	req.send(null);	
}

function graburl_ajax_statechange() 
{
	
    // only if req shows "complete"


    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            // ...processing statements go here...
			data = req.responseText;
			graburl_result(data);
        } else {
			graburl_failure();
            // alert("There was a problem retrieving the data:\n" + req.statusText);
        }
    }
	
}

var gu_button;
var gu_url;
var gu_textarea;
var guTextBackup;
function grabSummary(button,url, textarea , topic){

	re = new RegExp('^http://([A-z0-9_\-]+\.)+.*$');
	if(!re.exec(url)) {
		return false;
	}
	gu_button = button;	
	gu_url = url;
	gu_textarea = textarea;

	gu_button.disabled = true;

	guTextBackup = gu_textarea.value;
	gu_textarea.value = '';
	gu_textarea.style.background = 'url('+base_url+'images/ac_wait.gif) #fff 50% 50% no-repeat';
	graburl_ajax_connect(base_url + 'grabsummary.php?url='+ decodeURI(url)+'&topic='+decodeURI(topic) , 'GET')	
	//$('topic_links[<?=$i?>]').value
}

function graburl_result(responseText){
			if(responseText != ""){
//			writeCookie('archivoo_voted_'.id , true , 24);
				gu_textarea.value = responseText;
				gu_textarea.style.background = '#fff';
			}else{
				graburl_failure(responseText);	
			}	
}

function graburl_failure(responseText){
		gu_textarea.value = guTextBackup;
		gu_textarea.style.background = '#fff';		
		return false;
}