function attend(user_id, event_id, attend, is_single, is_iphone, user_name) {

	var queryString = "user_id=" + user_id + "&event_id=" + event_id + "&attend=" + attend;
	var RegretString = user_id + "," + event_id + ",0," + is_single + "," + is_iphone + ', "' + user_name + '"';
	var AttendString = user_id + "," + event_id + ",1," + is_single + "," + is_iphone + ', "' + user_name + '"';
	var xmlHttp;

	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	
	catch (e) {
		// Internet Explorer
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try {
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	
	xmlHttp.onreadystatechange=function() {    
		if(xmlHttp.readyState==4) {
			if (attend) {
				if (is_iphone) {
					document.getElementById("value" + event_id).innerHTML="<label>Kommer du?</label><div class='toggle' toggled='true' onclick='attend(" + RegretString + ")'><span class='thumb'></span><span class='toggleOn'>JA</span><span class='toggleOff'>NEJ</span></div></div>";
					if (document.getElementById("attending" + user_id)) { 
						document.getElementById("attending" + user_id).innerHTML = user_name;
					} else {
					doc_contents = document.getElementById("attending_list").innerHTML;
					document.getElementById("attending_list").innerHTML = doc_contents + "<span class='attendlist' id='attending" + user_id + "'>" + user_name + "</span><br />";
					}
				} else {
					document.getElementById("value" + event_id).innerHTML="Du kommer! <a href='javascript:void(0);' onclick='attend(" + RegretString + ")' class='regret'>x</a>";
				}	
				      
			} else {
				if (is_single) {
					if (is_iphone) {
						document.getElementById("value" + event_id).innerHTML="<label>Kommer du?</label><div class='toggle' onclick='attend(" + AttendString + ")'><span class='thumb'></span><span class='toggleOn'>JA</span><span class='toggleOff'>NEJ</span></div></div>";
						} 					
					document.getElementById("attending" + user_id).innerHTML="";
				} else {
					document.getElementById("value" + event_id).innerHTML="<a href='javascript:void(0);' onclick='attend(" +  AttendString + ");'><img src='/wp-content/themes/centrum4/images/attend_button.png' class='attending_button' style='width: 60px; height: 11px;' /></a>";
				}
			}
		}
		if(xmlHttp.readyState==1) {
			document.getElementById("value" + event_id).innerHTML="<label>Laddar... vänta!</label>";      
		}
	}
	xmlHttp.open("GET","http://www.centrumok.se/wp-content/themes/centrum4/update_attending.php?" + queryString,true);
	xmlHttp.send(null);
}


function toggle_div(d) {

	var thisdiv = document.getElementById(d);

	if (thisdiv.style.display == "none") { 
		thisdiv.style.display = "block";
		document.getElementById(d +'_header').style.backgroundPosition = "0 -17px";
	} else {
		thisdiv.style.display = "none";
		document.getElementById(d +'_header').style.backgroundPosition = "0 0";
	}
}	

function toggle_login() {
	if (document.getElementById('login_window').style.display == "block") {
		document.getElementById('login_window').style.display = "none";
		document.getElementById('blur').style.display = "none";
	} else {
		document.getElementById('login_window').style.display = "block";
		document.getElementById('blur').style.display = "block";
		document.getElementById('log').focus();									
	}
}

function show_attending (event) {
	document.getElementById('attending_' + event).style.display = "block";
}
function hide_attending (event) {
	document.getElementById('attending_' + event).style.display = "none";
}

function toggle_cal(object) {

	theobject = document.getElementById(object);
	
	if (theobject.style.display == "none") { 
		theobject.style.display = "block";
		calendar_button.src = "/wp-content/themes/centrum4/images/calendar_button_close.png";
	} else { 
		theobject.style.display = "none"; 
		calendar_button.src = "/wp-content/themes/centrum4/images/calendar_button.png";
	}
}	

function more_comments(comment_div){
	document.getElementById('first_comments').style.display = "none";
	document.getElementById('second_comments').style.display = "none";
	document.getElementById(comment_div).style.display = "block";
}

function show_comment (event) {
	document.getElementById(event).style.display = 'block';
}
function hide_comment (event) {
	document.getElementById(event).style.display = 'none';
}


/* functions for buttons in comments */

function ahrefThis() {
	strSelection = document.selection.createRange().text
	if (strSelection == "") document.text.text.focus()
	strHref = prompt("Enter the URL of the site you to link:","http://")
	if (strHref == null) return;
	document.selection.createRange().text = "<a href=\"" + strHref + "\" target=\"_blank\" class=\"text\">" + strSelection + "</a>"
	return;
}

function boldThis(from) {
	strSelection = document.selection.createRange().text
	if (strSelection == "") {
		document.text.text.focus()
		if (from == 2) document.text.text.select()
		strSelection = document.selection.createRange().text
		document.selection.createRange().text = strSelection + "<b></b>"
	}
	else document.selection.createRange().text = "<b>" + strSelection + "</b>"
	return;
}

function clipThis(from) {
	strSelection = document.selection.createRange().text;
	document.text.text.focus();
	var dummy = document.text.text.value;
	document.text.text.value = "";
	if (dummy) {
		document.selection.createRange().text = dummy + "\n\n<i>" + strSelection + "</i>";
	}
	else {
		document.selection.createRange().text = "<i>" + strSelection + "</i>";
	}
	return;
}

function italicThis(from) {
	strSelection = document.selection.createRange().text
	if (strSelection == "") {
		document.text.text.focus()
		if (from == 2) document.text.text.select()
		strSelection = document.selection.createRange().text
		document.selection.createRange().text = strSelection + "<i></i>"
	}
	else document.selection.createRange().text = "<i>" + strSelection + "</i>"
return;
}