var request = null;

function Set_Cookie( name, value, expires, path, domain, secure )
{
// set time, it's in milliseconds
var today = new Date();
today.setTime( today.getTime() );

/*
if the expires variable is set, make the correct
expires time, the current script below will set
it for x number of days, to make it for hours,
delete * 24, for minutes, delete * 60 * 24
*/
if ( expires )
{
expires = expires * 1000 * 60 * 60 * 24;
}
var expires_date = new Date( today.getTime() + (expires) );

document.cookie = name + "=" +escape( value ) +
( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
( ( path ) ? ";path=" + path : "" ) +
( ( domain ) ? ";domain=" + domain : "" ) +
( ( secure ) ? ";secure" : "" );
}


function Get_Cookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );


		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}


/* Initialize a Request object that is already constructed */
function initReq(reqType,url,bool){
    /* Specify the function that will handle the HTTP response */
    request.onreadystatechange=handleResponse;
    request.open(reqType,url,bool);
    request.send(null);
}
/* Wrapper function for constructing a Request object. */
function httpRequest(reqType,url,asynch){
    //Mozilla-based browsers
    if(window.XMLHttpRequest){
        request = new XMLHttpRequest();
    } else if (window.ActiveXObject){
        request=new ActiveXObject("Msxml2.XMLHTTP");
        if (! request){
            request=new ActiveXObject("Microsoft.XMLHTTP");
        }
     }
    //the request could still be null if neither ActiveXObject
    //initializations succeeded
    if(request){
       initReq(reqType,url,asynch);
    }  else {
        alert("Your browser does not permit the use of all of this application's features!");
    }
}

function rateIt(commentID, rateType) {
	document.getElementById('notrated-'+commentID).style.display = 'none';
	if(Get_Cookie(commentID) == null){
		Set_Cookie( commentID, '1', 30, '/', '', '' );
		if (rateType == 'ratedown') {
			//document.getElementById('comment-'+commentID).style.display = 'none';
		}
		var url = "http://www.berkelstream.nl/rate.php?ratetype="+rateType+"&commentid="+commentID;
		httpRequest("GET", url,true);
	}
}

//event handler for XMLHttpRequest
function handleResponse(){
    if(request.readyState == 4){
        if(request.status == 200){
            var rating = request.responseText;
	    var myresponse = new Array();
	    myresponse = rating.split("|");
	    var i = parseInt(myresponse[0]);
	    if (i > -1) {
	    	var output = '+' +myresponse[0]+' votes';
	    } else {
	    	var output = myresponse[0]+' votes';
	    }
            document.getElementById("rate-"+myresponse[1]).innerHTML =output;
        } else {
            alert("A problem occurred with communicating between the XMLHttpRequest object and the server program.");
        }
    }
}