/* Browser Functions library */

isIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
isWindows = (navigator.appVersion.indexOf("Windows") != -1) ? true : false;

function addLoadEvent(func) {
	var curOnLoad = window.onload;
	
	if(typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			curOnLoad();
			func();
		}
	}
}

function findPosition(obj) {
	var curLeft = curTop = 0;
	cssPos = (obj.style.position=='absolute') ? obj.style.position : getStyle(obj.id.toString(),'position');
	
	if(cssPos == "absolute") {
		curLeft = (obj.style.left!='') ? parseInt(obj.style.left) : parseInt(getStyle(obj.id.toString(),'left'));
		curTop = (obj.style.top!='') ? parseInt(obj.style.top) : parseInt(getStyle(obj.id.toString(),'top'));
	} else {
		if(obj.offsetParent) {
			curLeft = obj.offsetLeft;
			curTop = obj.offsetTop;
			
			while(obj = obj.offsetParent) {
				curLeft += obj.offsetLeft;
				curTop += obj.offsetTop;
			}
		}
	}
	return [curLeft,curTop];
}

function findSize(obj) {
	sx = (obj.style.width) ? parseInt(obj.style.width) : 0;
	sy = (obj.style.height) ? parseInt(obj.style.height) : 0;
	return [sx,sy];
}

function insertAfter(newElement,targetElement) {
	var parent = targetElement.parentNode;
	if (parent.lastChild == targetElement) {
		parent.appendChild(newElement);
	} else {
		parent.insertBefore(newElement,targetElement.nextSibling);
	}
}

function $(id) {
	if(!document.getElementById) return false;
	
	if(document.getElementById(id) == null || document.getElementById(id) == undefined) {
		return false;
	} else {
		return document.getElementById(id);
	}
}

function addListener(obj, type, callback, bubble) {
	if(document.addEventListener) {
		obj.addEventListener(type, callback, bubble);
	}
	else if(document.attachEvent) {
		obj.attachEvent("on" + type, callback, bubble);
	}
}

function removeListener(obj, type, callback) {
	if(document.removeEventListener) {
		obj.removeEventListener(type, callback, false);
	}
	else if(document.detachEvent) {
		obj.detachEvent("on" + type, callback, false);
	}
}

function MouseEvent(e) {
	this.e = (e) ? e : window.event;
	this.x = (e.PageX) ? e.PageX : e.clientX;
	this.y = (e.PageY) ? e.PageY : e.clientY;
	this.target = (e.target) ? e.target : e.srcElement;
	this.button = (e.button) ? e.button : e.button;
}

function MouseWheelEvent(e) {
	this.e = (e) ? e : window.event;
	this.delta = (e.detail) ? e.detail * -1 : e.wheelDelta / 40;
}

function cancelEvent(e) {
	e = (e) ? e : window.event;
	if(e.stopPropagation)
		e.stopPropagation();
	
	if(e.preventDefault) 
		e.preventDefault();
		
	e.cancelBubble = true;
	e.cancel = true;
	e.returnValue = false;
	return false;
}

function KeyEvent(e) {
	this.keyCode = (e.keyCode) ? e.keyCode : e.which;

	// Alt Keys
	this.altKey = (e.altKey) ? true : false;
	this.altLeft = (e.altLeft) ? true : false;

	// Control Keys
	this.ctrlKey = (e.ctrlKey) ? true : false;
	this.ctrlLeft = (e.ctrlLeft) ? true : false;
	
	// Shift Keys
	this.shiftKey = (e.shiftKey) ? true : false;
	this.shiftLeft = (e.shiftLeft) ? true : false;
}

function getStyle(el,styleProp) {
	var x = $(el);
	if (x.currentStyle)
		var y = x.currentStyle[styleProp];
	else if (window.getComputedStyle)
		var y = document.defaultView.getComputedStyle(x,null).getPropertyValue(styleProp);
	return y;
}

function disableContext() {
	return false;
}