Array.prototype.in_array = function(p_val) {
	for (var i = 0, l = this.length; i < l; i++) {
		if (this[i] == p_val) {
			return true;
		}
	}

	return false;
}

function $id(id) {
	var element = document.getElementById(id);
	return $(element);
}

function $tag(tag_name) {
	var dom = this.getElementsByTagName(tag_name);
	var elements = [];

	for (var i = 0; i < dom.length; i++) {
		elements[i] = $(dom[i]);
	}

	if (elements.length == 1) {
		elements = elements[0];
	}

	return elements;
}

function replaceHTML(el, html) {
	var oldEl = typeof el === "string" ? document.getElementById(el) : el;
	/*@cc_on // Pure innerHTML is slightly faster in IE
		oldEl.innerHTML = html;
		return oldEl;
	@*/
	var newEl = oldEl.cloneNode(false);
	newEl.innerHTML = html;
	oldEl.parentNode.replaceChild(newEl, oldEl);

	return newEl;
}

function $(o) {
	o.$id = $id;
	o.$tag = $tag;

	o.$clear = function () {
		while (o.firstChild) {
			o.removeChild(o.firstChild);
		}
	}

	o.$text = function (str) {
		o.$clear();
		var text_node = document.createTextNode(str);
		o.appendChild(text_node);
	}

	o.$replace = function () {
		o.$clear();
		o.appendChild(o);
	}

	return o;
}

/*Object.prototype.iy_empty = function () {
	while (this.firstChild) {
		this.removeChild(this.firstChild);
	}
}

Object.prototype.iy_text = function (_txt) {
	this.iy_empty();
	var text_node = document.createTextNode(_txt);
	this.appendChild(text_node);
}*/

/*Object.prototype.iy_id = function (_id) {
	var element = this.getElementById(_id);

	return element;
}*/

/*Object.prototype.iy_tag = function (_tag) {
	var elements = this.getElementsByTagName(_tag);

	if (elements.length == 1) {
		elements = elements[0];
	}

	return elements;
}*/

Object.prototype.iy_replace = function (o) {
	this.iy_empty();
	this.appendChild(o);
}

window.iy_size = function () {
	var width = 0;
	var height = 0;

	if(typeof(window.innerWidth) == 'number') {
		width = window.innerWidth;
		height = window.innerHeight;
	} else if(document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
		width = document.documentElement.clientWidth;
		height = document.documentElement.clientHeight;
	} else if(document.body && (document.body.clientWidth || document.body.clientHeight)) {
		width = document.body.clientWidth;
		height = document.body.clientHeight;
	}

	return [width, height];
}

window.iy_match = function () {
	var size = window.iy_size();
	var resize_height = size[1] - document.body.clientHeight - 3;
	window.resizeBy(0, -resize_height);
}

window.iy_center = function () {
	var size = window.iy_size();

	//window.screenX = (screen.width - size[0]) / 2;
	//window.screenY = (screen.height - size[1]) / 2;
	var x = (screen.width - size[0]) / 2;
	var y = (screen.height - size[1]) / 2;
	window.moveTo(x, y);
}

window.iy_open = function (page, name, width, height) {
	if (!width) width = 1;
	if (!height) height = 1;

	var winl = (screen.width - width) / 2;
	var wint = (screen.height - height) / 2;
	var settings = 'height=' + height + ',';
	settings += 'width=' + width + ',';
	settings += 'top=' + wint + ',';
	settings += 'left=' + winl + ',';
	settings += 'menubar=no,';
	settings += 'location=no,';
	settings += 'resizable=no,';
	settings += 'scrollbars=no,';
	settings += 'status=no';

	var win = window.open(page, name, settings);
}