// select_all_friends
var all_selected = false;
function select_all_friends(){
	if(all_selected == false){
				all_selected = true;
	}else{
				
		all_selected = false;
	}
}

// select_onpage_friends
var onpage_selected = false;
function select_onpage_friends(){
	if(onpage_selected == false){
				onpage_selected = true;
	}else{
				
		onpage_selected = false;
	}
}	


// select a record
function set_record_selected(record_id){	
	// track the selected id
	var selected_field = document.getElementById("invite_friends_selected");
	current_value = selected_field.value;
	
	// select a record
	selected_field.value = current_value+record_id+",";
	
	// the div in question
	// check if it's on this page, then highlight
	if(document.getElementById("record_"+record_id)){
		var record = document.getElementById("record_"+record_id);
		record.className = "record_selected";
	}
}

// select a record
function set_record_unselected(record_id){	
	// track the selected id
	var selected_field = document.getElementById("invite_friends_selected");
	current_value = selected_field.value;
	
	// unselect a record
	unselect_record(record_id);
	
	// the div in question
	// uncheck it if it exists
	if(document.getElementById("record_"+record_id)){
		var record = document.getElementById("record_"+record_id);
		record.className = "invite_select_record";
	}
}		

// ajax_callback
function ajax_callback_disabled(){
	// track the selected id
	var selected_field = document.getElementById("invite_friends_selected");
	current_value = new String(selected_field.value);
	current_values = current_value.split(',');
	
	// loop through and check selected records
	// less one account for extra appended comma
	for(i=0; i<(current_values.length-1); i++){
		// only check records on the page
		if(document.getElementById("record_"+current_values[i])){
			var record = document.getElementById("record_"+current_values[i]);
			record.className = "record_selected";
		}
	}
}

// submit_form
function submit_form(){
	var selected_field = document.getElementById("invite_friends_selected");
	current_value = new String(selected_field.value);
	current_values = current_value.split(',');
	
	if(current_value != ""){
		document.form_name.submit();
		return(true);
	}else{
		alert("At least 1 friend must be selected to share this event.");
		return(false);
	}
}