var refresh = 1;
var image1 = 1;
var image2 = 1;
var image3 = 1;

function initRotate()
{
	window.setTimeout("doRotate()", 2000);
}

function doRotate()
{
	if (refresh==1)
	{
		refresh = 2;
		image1++;
		if (image1==9)
		{
			image1 = 1;
		}
		getElement('mt_ad').src = 'media/rota/mt/' + image1 + '.jpg';
	}
	else if (refresh==2)
	{
		refresh = 3;
		image2++;
		if (image2==7)
		{
			image2 = 1;
		}
		getElement('sm_ad').src = 'media/rota/sm/' + image2 + '.jpg';
	}
	else
	{
		refresh = 1;
		image3++;
		if (image3==9)
		{
			image3 = 1;
		}
		getElement('ww_ad').src = 'media/rota/ww/' + image3 + '.jpg';
	}
	initRotate();
}

function getElement(id)
{
	if (document.getElementById) 
	{
		return document.getElementById(id); 
	}
	else
	{
		return document.all(id);
	}
}