// JavaScript Document

function addEvent(obj, evType, fn){
    if (obj.addEventListener){ 
        obj.addEventListener(evType, fn, false); 
        return true; 
    } else if (obj.attachEvent){ 
        var r = obj.attachEvent("on"+evType, fn); 
        return r; 
    } else { 
        return false; 
    }
}

addEvent(window, 'load', initialise);

function initialise(){
	if(document&&document.getElementById){
		var entryText = document.getElementById("reasons");
		if (entryText!=null)addEvent(entryText, 'focus', clearForm);
		var commentText = document.getElementById("commenttext");
		if (commentText!=null) addEvent(commentText, 'focus', clearComments);
	}
}

function checkEmail(form){
	var atplace = form.email.value.indexOf("@");
	var dotplace = form.email.value.lastIndexOf(".");
	if(form.email.value==""){
		alert ("please enter an e-mail address");
		return false;
	}else if(atplace<1 || dotplace <1 || dotplace < atplace){
		alert ("please enter a valid e-mail address");
		return false;
	}
	return true;
}

function clearForm() {
	clearText(document.getElementById("reasons"));
}

function clearComments(){
	clearText(document.getElementById("commenttext"));
}

function clearText(input){
	if (input.value=="Write your response..."||input.value=="Write your reasons here..."||input.value=="Write your message here..."){
		input.value = "";
	}
	input.style.background="#FFFFFF";
}

function growTextarea(id) {
    if (document && document.getElementById) {
        d = document.getElementById(id);
        if (id) d.rows += 4;
    }
}

function growTextarea(id) {
    if (document && document.getElementById) {
        d = document.getElementById(id);
        if (d) d.rows += 5;
        d = document.getElementById('growtext');
        if (d && d.innerHTML) d.innerHTML = 'Still want more space to write in?';
    }
}

//added a variable to be explicit and avoid undefined errors
var inAddMode = false;
function toggleAdd() {
    searchDiv     = document.getElementById('searchinstructions');
    addInstrDiv   = document.getElementById('addinstructions');
    addDiv        = document.getElementById('addform');
    resultsDiv    = document.getElementById('recent_places');

    if (inAddMode) {
        searchDiv.style.display = "block";
        addDiv.style.display = "none";
        addInstrDiv.style.display = "none";
        resultsDiv.style.display = "block";
        inAddMode = false;        
    }
    else {
        searchDiv.style.display = "none";
        addDiv.style.display = "block";
        addInstrDiv.style.display = "block";
        resultsDiv.style.display = "none";          
        inAddMode = true;
    }
}