function toggle(obj) {
	var el = document.getElementById(obj);
	if ((el.style.display != 'none')&&(el.style.display != '')) {
		el.style.display = 'none';
	}
	else {
		el.style.display = 'block';
	}
}

function showPhoto(whichDirectory,whichPhoto) {
	document.getElementById('photo').src = 'lib_resizer.asp?gallerypath='+whichDirectory+'&imagepath='+whichPhoto+'&w=600&aratio=w';
	document.getElementById('page').style.display = 'none';
	document.getElementById('photo_page').style.display = 'block';
}

function hidePhoto(whichPhoto) {
	document.getElementById('page').style.display = 'block';
	document.getElementById('photo_page').style.display = 'none';
}

function closeDIV(obj) {
	obj.parentNode.parentNode.style.display = 'none';
	document.getElementById('shadow').style.display = 'none';
}

function openDIV(obj) {
	obj = 'day' + obj;
	document.getElementById(obj).style.display = 'block';
	document.getElementById('shadow').style.display = 'block';
}

function getNthAncestor(node, n) {
	// alert(getNthAncestor(oLnk, 4).id) ;
	var parent = node;
	for(var i = 0; i < n; i++) {
		parent = parent.parentNode;
	}
	return parent;
}

// support function for querystring(key) 
function PageQuery(q) {
	if(q.length > 1) {
		this.q = q.substring(1, q.length);
	}else{
		this.q = null;
	}
	this.keyValuePairs = new Array();
	if(q){
		for(var i=0; i < this.q.split("&").length; i++) {
			this.keyValuePairs[i] = this.q.split("&")[i];
		}
	}
	this.getKeyValuePairs = function() { return this.keyValuePairs; }
	this.getValue = function(s) {
		for(var j=0; j < this.keyValuePairs.length; j++){
			if(this.keyValuePairs[j].split("=")[0] == s)
				return this.keyValuePairs[j].split("=")[1];
		}
		return false;
	}
	this.getParameters = function() {
		var a = new Array(this.getLength());
		for(var j=0; j < this.keyValuePairs.length; j++) {
			a[j] = this.keyValuePairs[j].split("=")[0];
		}
		return a;
	}
	this.getLength = function() { return this.keyValuePairs.length; }	
}

function queryString(key){
	// requires PageQuery(q) function
	// returns the querystring value
	var page = new PageQuery(window.location.search); 
	return unescape(page.getValue(key)); 
}

function popUp(whichURL,whichWindow,Xsize,Ysize) {
	whichWindow = whichWindow.replace(' ', '_');
	if (! window.focus) {
		return true;
	} else {
		if (typeof(whichURL) == 'string') {
			whichURL=whichURL;
		} else {
			whichURL=whichURL.href;
		}
		window.open(whichURL, whichWindow, 'width='+ Xsize +',height='+ Ysize +',scrollbars=no,resize=yes,status=no,toolbar=no');
		return false;
	}
}

// Before submitting make sure valid keywords have been added 
function Search() {
	if(document.forms['search'].keywords.value == '') {
		alert('Please enter a keyword to search for!');
		return false;
	}else if(document.forms['search'].keywords.value == 'Search'){
		return false;
	}else{
		return true;
	}
}