how to implement a cross browser effect in jscook menu
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prop.effect=new CMWipeEffect(var1, var2, etc...)
function CMWipeEffect (var1, var2, etc...)
{
	initialization
	this.var1 = var1
	this.var2 = var2
	etc...
}

CMWipeEffect.prototype.getInstance = function (menu, orient)
{
	return new CMWipeEffectInstance(menu, orient, this.var1, this.var2);
}


function CMWipeEffectInstance (menu, orient, speed)
{
	this.base = new CMSpecialEffectInstance (this, menu);
}

CMWipeEffectInstance.prototype.showEffect = function (changed)
{
	if (!this.base.canShow (changed))
		return;

	var percent = this.percent;
	if (this.slideOrient == 'h')
		this.slideMenuV ();
	else
		this.slideMenuH ();

	if (percent == 0)
	{
		this.base.startShowing ();
	}

	if (percent < 100)
	{
		this.percent += this.speed;
		cmTimeEffect (this.menu.id, this.show, 10);
	}
	else if (this.show)
	{
		this.base.finishShowing ();
	}
}

CMSlidingEffectInstance.prototype.hideEffect = function (changed)
{
	if (!this.base.canHide (changed))
		return;

	var percent = this.percent;
	if (this.slideOrient == 'h')
		this.slideMenuV ();
	else
		this.slideMenuH ();

	if (percent > 0)
	{
		this.percent -= this.speed;
		cmTimeEffect (this.menu.id, this.show, 10);
	}
	else if (!this.show)
	{
		this.menu.style.clip = 'auto';
		this.base.finishHiding ();
	}
}