/** Opacity Manager **/
function Opacity(id)
{
	this.opacity = 0;
	this.style = id.style;
	this.timer = null;
}
Opacity.prototype.setOpacity = function(value)
{
	if(value == 0) {
		this.style.display = 'none';
	} else {
		this.style.display = 'block';
	}
	this.style.opacity = (value / 100);
	this.style.MozOpacity = (value / 100);
	this.style.KhtmlOpacity = (value / 100);
	this.style.filter = "alpha(opacity=" + value + ")";
}
Opacity.prototype.Stop = function()
{
	clearInterval(this.timer);
	if(this.opacity> 0) {
		this.setOpacity(100);
	}
}
Opacity.prototype.FadeIn = function()
{
	var _this = this;
	this.timer = window.setInterval(function() { _this.FadeInTimer(); }, 10);
}
Opacity.prototype.FadeInTimer = function()
{
	if(this.opacity <100) {
		this.opacity = this.opacity + 25;
		this.setOpacity(this.opacity);
		return false;
	} else {
		clearInterval(this.timer);
		if ( this.FadeDone ) { this.FadeDone(); }
		return true;
	}
}
Opacity.prototype.FadeOut = function()
{
	var _this = this;
	this.timer = window.setInterval(function() { _this.FadeOutTimer(); }, 10);
}
Opacity.prototype.FadeOutTimer = function()
{
	if(this.opacity> 0) {
		this.opacity = this.opacity-25;
		this.setOpacity(this.opacity);
		return false;
	} else {
		clearInterval(this.timer);
		return true;
	}
}

Element.FadeIn = function(element){
	if ( !element.opacity ) element.opacity = new Opacity( element );
	element.opacity.FadeIn()	
}


Element.FadeOut = function(element){  
	if ( !element.opacity ) element.opacity = new Opacity( element );
	element.opacity.FadeOut()	
}