function checkuncheckall(name, checkbox) {
	// used for parkingtypes[] checkboxes
	e = document.getElementsByName(name);
	
	status = checkbox.checked;
	
	if (status == null) return false;
	
	for (i = 0; i < e.length; i++) {
		if (e[i].type == "checkbox") e[i].checked = status;
	}
}


function setQuickSearchPrices(s) {
	// function for changing the price search parameters for the quicksearch
	f = document.forms['quicksearchprice'];
	if (!f) {
		alert("Unable to change values");
		return false;
	}
	
	prices = s.options[s.selectedIndex].id;
	prices = prices.split(",");
	
	f.pricefrom.value = prices[0];
	f.priceto.value = prices[1];
	
	return true;
}


// replaces the quicksearch td with a quick search for price.
function changeQuickSearch() {
	td = document.getElementById('quicksearchtd');
	if (!td) {
		alert("Unable to perform search");
		return false;
	}
	
	var text = '\
	<form name="quicksearchprice" method="get" action="/search.htm">\
		<select onchange="setQuickSearchPrices(this)">\
			<option id="0,200000">Valued below &euro;200,000</option>\
			<option id="200000,350000">&euro;200,000 to &euro;350,000</option>\
			<option id="350000,550000">&euro;350,000 to &euro;550,000</option>\
			<option id="550000,1000000">&euro;550,000 to &euro;1m</option>\
			<option id="1000000,2000000">&euro;1m to &euro;2m</option>\
			<option id="2000000,9999999">&euro;2m and above</option>\
		</select>\
		<input type="hidden" name="pricefrom" value="0" />\
		<input type="hidden" name="priceto" value="9999999" />\
		<input type="hidden" name="action" value="search" />\
		<br />\
		<br />\
		<input type="image" src="/images/but-go.gif" alt="Search" title="Search" />\
	</form>\
	';
	
	td.innerHTML = text;
	
	return true;
}

/*
function toggleLocationInputs(regionid) {
	// function to invert the choice for a region's location checkboxes
	var inputs = document.getElementsByTagName("input");
	for (var i = 0; i < inputs.length; i++) {
		var id = inputs[i].id.split(",");
		if (id.length == 2) {
			if (id[0] == "r"+regionid) {
				if (inputs[i].checked) {
					inputs[i].checked = false;
				}
				else {
					inputs[i].checked = true;
				}
			}
		}
	}
}
*/
function toggleLocationInputs(regionid, cb) {
	// function to invert the choice for a region's location checkboxes
	var inputs = document.getElementsByTagName("input");
	for (var i = 0; i < inputs.length; i++) {
		var id = inputs[i].id.split(",");
		if (id.length == 2) {
			if (id[0] == "r"+regionid) {
				if (cb.checked) {
					inputs[i].checked = true;
				}
				else {
					inputs[i].checked = false;
				}
			}
		}
	}
}

function toggleLocationDivs(iteration) {
	// performs show/hide function on the divs which contain the checkboxes for locations within regions
	var divs = document.getElementsByTagName("div");
	for (var i = 0; i < divs.length; i++) {
		var id = divs[i].id.split(",");
		if (id.length == 2) {
			if (id[0] == "regiondiv") {
				if (id[1]==iteration) {
					if (divs[i].style.display=="none") {
						divs[i].style.display="block";
						l = document.getElementById('ldpm'+iteration);
						if (l)
						{
							l.src = "/images/icons/minus_s.gif";
						}
					}
					else {
						divs[i].style.display="none";
						l = document.getElementById('ldpm'+iteration);
						if (l) {
							l.src = "/images/icons/plus_s.gif";
						}
					}
				}
				else {
					divs[i].style.display="none";
					l2 = document.getElementById('ldpm'+id[1]);
					if (l2) {
						l2.src = "/images/icons/plus_s.gif";
					}
				}
			}
		}
	}
}

function toggleAllLocations(cb) {
	// all locations checkbox function.
	// takes the checkbox as an input and adjusts all (location) checkboxes based on the current status of the all locations checkbox.
	var inputs = document.getElementsByTagName("input");
	var toggle = cb.checked;
	
	for (var i = 0; i < inputs.length; i++) {
		if (inputs[i].type == "checkbox") {
			if (inputs[i].id.match(/^r[0-9]*,l[0-9]*$/) ) {
				inputs[i].checked = toggle;
			}
		}
	}
}

function cancelAllLocations(r) {
	// change the alllocations checkbox
	al = document.getElementById("alllocations");
	if (al) {
		al.checked = false;
	}
	
	// change the 'select all' box for the region
	e = document.getElementById('all_r'+r);
	if (e) e.checked = false;
}

// toggles the google map div on the edit property page
function toggleGoogleMapDiv() {
	d = document.getElementById("googlemapdiv");
	if (!d) {
		alert("Unable to get map DIV");
		return false;
	}
	
	if (d.style.display == "block") {
		d.style.display = "none";
		return true;
	}
	else {
		d.style.display = "block";
		return true;
	}
}

// doubles or halves the input/textarea size
function changeSize(elementname, increase) {
	e = document.getElementById(elementname);
	if (!e) {
		alert("Unable to find element '"+ elementname + "'");
	}
	else {
		function calc(num, up) // calculates the change required
		{
			if (up) {
				return num*2;
			}
			else {
				if (num/2 < 1) {
					return 1;
				}
				else {
					return Math.ceil(num/2);
				}
			}
		}
		
		switch(e.type) {
			case "textarea":
				e.rows = calc(e.rows, increase);
				break;
			case "select-one":
				e.size = calc(e.size, increase);
				break;
			case "select-multiple":
				e.size = calc(e.size, increase);
				break;
			default:
				alert("Unknown type: " + e.type);
		}
	}
}


function openPopup(url)
{
	window.open(url, 'aapopup');
}


function uncheckPropertyTypes(checkbox)
{
	if (!checkbox.checked) return; // box isn't ticked, nothing to do
	var inputs = document.getElementsByTagName('input');
	for (i=0; i < inputs.length; i++)
	{
		if (inputs[i].type=='checkbox'  &&  inputs[i].name=='propertytypes[]')
		{
			inputs[i].checked=false;
		}
	}
}



// 3 functions found at http://www.thescripts.com/forum/thread520214.html
function hasClassName(str, className)
{
	var strPadded = " " + str + " ";
	var classNamePadded = " " + className + " ";
	return strPadded.indexOf(classNamePadded) != -1;
}

function removeClassName(element, className)
{
	var strPadded = " " + element.className + " ";
	var classNamePadded = " " + className + " ";
	var result = strPadded.replace(classNamePadded, "");
	result = result.substring(1, result.length - 1);
	element.className = result;
}

function addClassName(element, className)
{
	var str = element.className;
	if (!hasClassName(str, className))
	{
		str += " ";
		str += className;
		element.className = str;
	}
}


function setAsHomePage(btn, title, addr) {
	if (addr == undefined) { addr = window.location.href; }
	if (title == undefined) { title = 'Alpine Angels - Properties in the French and Swiss Alps'; }
	
	if ($.browser.msie) { // this is tested with v6 and v8
		btn.style.behavior='url(#default#homepage)'; 
		btn.setHomePage(addr);
	}
	else if ($.browser.mozilla) {
		window.sidebar.addPanel(title, addr, '');
	}
	else if ($.browser.opera) {
		alert("Sorry, Opera doesn't support setting the home page.\r\n\r\nWhy not press Ctrl + D to bookmark this page instead!");
	}
	else {
		alert("Sorry, it's not possible to set the home page for your browser.\r\n\r\nWhy not try pressing Ctrl + D to bookmark this page instead!");
	}
}