/*/////////////////////////////////////////////////////////////////////////////////////////
|	
|	utilities.js - A place to store various JS functions used throughout the site
|	
|
/////////////////////////////////////////////////////////////////////////////////////////*/

function getElementsByClassName(className, tag, elm){
	var testClass = new RegExp("(^|\\\\s)" + className + "(\\\\s|$)");
	var tag = tag || "*";
	var elm = elm || document;
	var elements = (tag == "*" && elm.all)? elm.all : elm.getElementsByTagName(tag);
	var returnElements = [];
	var current;
	var length = elements.length;
	for(var i=0; i<length; i++){
		current = elements[i];
		if(testClass.test(current.className)){
			returnElements.push(current);
		}
	}
	return returnElements;
}

var total_photo_fields = 0;
var photos_per_gallery = 0;

function addPhotoRow() {
    if (total_photo_fields >= photos_per_gallery) {
        hideAddPhotoLink();
        return false;
    }
    
    document.getElementById('row'+total_photo_fields).style.display = 'block';
    total_photo_fields += 2;

    if (total_photo_fields >= photos_per_gallery) {
        hideAddPhotoLink();
        return false;
    }    
}

function hideAddPhotoLink() {
    document.getElementById('add_more').style.display = 'none';
}

function removePhoto(pid) {
    document.getElementById('pb'+pid).style.display = 'none';
    document.getElementById('pa'+pid).style.display = 'block';    
    document.getElementById('remove_photo'+pid).value = 1;
}

function setMaxLength() {
	var x = document.getElementsByTagName('textarea');
	var counter = document.createElement('div');
	counter.className = 'counter';
	for (var i=0;i<x.length;i++) {
		if (x[i].getAttribute('maxlength')) {
			var counterClone = counter.cloneNode(true);
			counterClone.relatedElement = x[i];
			counterClone.innerHTML = '<span>0</span>/'+x[i].getAttribute('maxlength');
			x[i].parentNode.insertBefore(counterClone,x[i].nextSibling);
			x[i].relatedElement = counterClone.getElementsByTagName('span')[0];

			x[i].onkeyup = x[i].onchange = checkMaxLength;
			x[i].onkeyup();
		}
	}
}

function checkMaxLength() {
	var maxLength = this.getAttribute('maxlength');
	var currentLength = this.value.length;
	if (currentLength > maxLength)
		this.relatedElement.className = 'toomuch';
	else
		this.relatedElement.className = '';
	this.relatedElement.firstChild.nodeValue = currentLength;
	// not innerHTML
}